Calling Subroutine

Hi gurus,

I have a code in the MAIN WINDOW of a SAPscript that looks like this:

text element 100

perform get_ordertype from zprog

using &VBELN&

changing &AUART

text element 200

perform get_ordertype from zprog

using &VBELN&

changing &AUART

is it ok to call the same subroutine on one window (in this case the MAIN window). Is there a conflict in this code?

Thanks

Andre