The following code gives you 1 event, checking a variable for 36 different values(0-35) and gives you up to 13 lines of code for each variable condition, for a total of 644 lines of code.
I doubt seriously anyone will have a code system that utilizes over 500 lines of code in one event, but this is to give you an idea on how you can make modes work for you
I worked hard on presentation for this(almost 2 hours), turned out better then I was hoping
Mode 1
Touch/Talk
01;Val-Conditional Branch -> Shared Variable 01( <= 2, 5, 8)
--02;<Option 1/Start> -> Shared Variable 01 <= 2
----03;Modify Mode -> Mode 3
--04;<Option 1/End>
--05;<Option 2/Start> -> Shared Variable 01 <= 5
----06;Modify Mode -> Mode 4
--07;<Option 2/End>
--08;<Option 3/Start> -> Shared Variable 01 <= 8
----09;Modify Mode -> Mode 5
--10;<Option 3/End>
11;End Branch
12;Val-Conditional Branch -> Shared Variable 01( <= 11, 14, 17)
--13;<Option 1/Start> -> Shared Variable 01 <= 11
----14;Modify Mode -> Mode 6
--15;<Option 1/End>
--16;<Option 2/Start> -> Shared Variable 01 <= 14
----17;Modify Mode -> Mode 7
--18;<Option 2/End>
--19;<Option 3/Start> -> Shared Variable 01 <= 17
----20;Modify Mode -> Mode 8
--21;<Option 3/End>
22;End Branch
23;Val-Conditional Branch -> Shared Variable 01( <= 20, 23, 26)
--24;<Option 1/Start> -> Shared Variable 01 <= 20
----25;Modify Mode -> Mode 9
--26;<Option 1/End>
--27;<Option 2/Start> -> Shared Variable 01 <= 23
----28;Modify Mode -> Mode 10
--29;<Option 2/End>
--30;<Option 3/Start> -> Shared Variable 01 <= 26
----31;Modify Mode -> Mode 11
--32;<Option 3/End>
33;End Branch
34;Val-Conditional Branch -> Shared Variable 01( <= 29, 32, 35)
--35;<Option 1/Start> -> Shared Variable 01 <= 29
----36;Modify Mode -> Mode 12
--37;<Option 1/End>
--38;<Option 2/Start> -> Shared Variable 01 <= 32
----39;Modify Mode -> Mode 13
--40;<Option 2/End>
--41;<Option 3/Start> -> Shared Variable 01 <= 35
----42;Modify Mode -> Mode 14
--43;<Option 3/End>
44;End Branch
Mode 3
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 0, 1, 2)
--02;<Option 1/Start> -> Shared Variable 01 = 0
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 1
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 2
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 4
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 3, 4, 5)
--02;<Option 1/Start> -> Shared Variable 01 = 3
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 4
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 5
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 5
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 6, 7, 8)
--02;<Option 1/Start> -> Shared Variable 01 = 6
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 7
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 8
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 6
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 9, 10, 11)
--02;<Option 1/Start> -> Shared Variable 01 = 9
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 10
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 11
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 7
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 12, 13, 14)
--02;<Option 1/Start> -> Shared Variable 01 = 12
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 13
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 14
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 8
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 15, 16, 17)
--02;<Option 1/Start> -> Shared Variable 01 = 15
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 16
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 17
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 9
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 18, 19, 20)
--02;<Option 1/Start> -> Shared Variable 01 = 18
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 19
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 20
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 10
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 21, 22, 23)
--02;<Option 1/Start> -> Shared Variable 01 = 21
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 22
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 23
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 11
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 24, 25, 26)
--02;<Option 1/Start> -> Shared Variable 01 = 24
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 25
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 26
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 12
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 27, 28, 29)
--02;<Option 1/Start> -> Shared Variable 01 = 27
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 28
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 29
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 13
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 30, 31, 32)
--02;<Option 1/Start> -> Shared Variable 01 = 30
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 31
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 32
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 14
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 33, 34, 35)
--02;<Option 1/Start> -> Shared Variable 01 = 33
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 34
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 35
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
I doubt seriously anyone will have a code system that utilizes over 500 lines of code in one event, but this is to give you an idea on how you can make modes work for you

I worked hard on presentation for this(almost 2 hours), turned out better then I was hoping
Mode 1
Touch/Talk
01;Val-Conditional Branch -> Shared Variable 01( <= 2, 5, 8)
--02;<Option 1/Start> -> Shared Variable 01 <= 2
----03;Modify Mode -> Mode 3
--04;<Option 1/End>
--05;<Option 2/Start> -> Shared Variable 01 <= 5
----06;Modify Mode -> Mode 4
--07;<Option 2/End>
--08;<Option 3/Start> -> Shared Variable 01 <= 8
----09;Modify Mode -> Mode 5
--10;<Option 3/End>
11;End Branch
12;Val-Conditional Branch -> Shared Variable 01( <= 11, 14, 17)
--13;<Option 1/Start> -> Shared Variable 01 <= 11
----14;Modify Mode -> Mode 6
--15;<Option 1/End>
--16;<Option 2/Start> -> Shared Variable 01 <= 14
----17;Modify Mode -> Mode 7
--18;<Option 2/End>
--19;<Option 3/Start> -> Shared Variable 01 <= 17
----20;Modify Mode -> Mode 8
--21;<Option 3/End>
22;End Branch
23;Val-Conditional Branch -> Shared Variable 01( <= 20, 23, 26)
--24;<Option 1/Start> -> Shared Variable 01 <= 20
----25;Modify Mode -> Mode 9
--26;<Option 1/End>
--27;<Option 2/Start> -> Shared Variable 01 <= 23
----28;Modify Mode -> Mode 10
--29;<Option 2/End>
--30;<Option 3/Start> -> Shared Variable 01 <= 26
----31;Modify Mode -> Mode 11
--32;<Option 3/End>
33;End Branch
34;Val-Conditional Branch -> Shared Variable 01( <= 29, 32, 35)
--35;<Option 1/Start> -> Shared Variable 01 <= 29
----36;Modify Mode -> Mode 12
--37;<Option 1/End>
--38;<Option 2/Start> -> Shared Variable 01 <= 32
----39;Modify Mode -> Mode 13
--40;<Option 2/End>
--41;<Option 3/Start> -> Shared Variable 01 <= 35
----42;Modify Mode -> Mode 14
--43;<Option 3/End>
44;End Branch
Mode 3
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 0, 1, 2)
--02;<Option 1/Start> -> Shared Variable 01 = 0
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 1
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 2
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 4
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 3, 4, 5)
--02;<Option 1/Start> -> Shared Variable 01 = 3
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 4
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 5
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 5
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 6, 7, 8)
--02;<Option 1/Start> -> Shared Variable 01 = 6
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 7
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 8
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 6
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 9, 10, 11)
--02;<Option 1/Start> -> Shared Variable 01 = 9
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 10
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 11
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 7
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 12, 13, 14)
--02;<Option 1/Start> -> Shared Variable 01 = 12
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 13
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 14
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 8
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 15, 16, 17)
--02;<Option 1/Start> -> Shared Variable 01 = 15
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 16
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 17
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 9
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 18, 19, 20)
--02;<Option 1/Start> -> Shared Variable 01 = 18
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 19
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 20
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 10
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 21, 22, 23)
--02;<Option 1/Start> -> Shared Variable 01 = 21
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 22
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 23
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 11
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 24, 25, 26)
--02;<Option 1/Start> -> Shared Variable 01 = 24
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 25
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 26
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 12
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 27, 28, 29)
--02;<Option 1/Start> -> Shared Variable 01 = 27
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 28
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 29
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 13
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 30, 31, 32)
--02;<Option 1/Start> -> Shared Variable 01 = 30
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 31
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 32
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1
Mode 14
Auto
***You have up to 13 lines of code available for each option***
01;Val-Conditional Branch -> Shared Variable 01( = 33, 34, 35)
--02;<Option 1/Start> -> Shared Variable 01 = 33
--03;<Option 1/End>
--04;<Option 2/Start> -> Shared Variable 01 = 34
--05;<Option 2/End>
--06;<Option 3/Start> -> Shared Variable 01 = 35
--07;<Option 3/End>
08;End Branch
09;Modify Mode -> Mode 1





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