Subroutines - Must I define a variable in the main program?

After doing some testing, I found the following:

Without defining VAR1 previously in the main program, the comment won't report the value that sVAR1 gives VAR1. What I did is set it up as is shown above, and then deleted the initial assignment. The link to VAR1 in the comment is still valid, but VAR1 defaults to 0 when opening the program. I was hoping that the variable would default to the value defined in the subroutine, but that's not the case. Also, it is likely a bad idea to have the connection to an uninstantiated variable in the event that something gets edited and the link gets broken.

After doing some testing, I found the following:

Without defining VAR1 previously in the main program, the comment won't report the value that sVAR1 gives VAR1. What I did is set it up as is shown above, and then deleted the initial assignment. The link to VAR1 in the comment is still valid, but VAR1 defaults to 0 when opening the program. I was hoping that the variable would default to the value defined in the subroutine, but that's not the case. Also, it is likely a bad idea to have the connection to an uninstantiated variable in the event that something gets edited and the link gets broken.

Hi JacobCheverie , depending on what it is you are trying to achieve, it might be better to write the value of the variable to a text file on the PC and then have routines read it in using File/IO commands.