I try to use the session ttdskcs in an own script like it is in the session ttdsk2105m000 as zoom from an formfield. The session starts, but ignores the actual value of the field as old color and when I cancel the color selection, then the value 0 is returned in my field.
My question: Has anybody an idea, what the session ttdskcs expect as input and what it return?
With bic_info tool I see some external variables, but it is very frustrating to try the variations and get no result.

Define extern long variable ext_color in program script and ttdskcs will work accordingly.

Thanks for the hint. It works fine.