Stored Variable

[Gintaras]

Use int instead of str, and no quotes.

int test ;;declare integer variable test
test=8 ;;assign integer value
out (test + 1) ;;display test + 1 (=9)

Or, if it must be string, convert it to integer to do calculations:

str test ;;declare string variable test
test="8" ;;assign string

int i=val(test) ;;convert to integer
i=i+1 ;;or just i+1
test=i ;;convert to string

out test