Yes, this is possible,
but a little bit tricky:
starts a first script, e.g. "s1.txt", without a function code:
"some text" process="s1.txt"
At the beginning of
"s1.txt", before the first Screen command, you determine the selected
table line and set the cell value into your own variable, e.g. into V[selvalue].
Then, after a "Screen" command for the current screen, you use an
Enter command to start the new transaction, passing the value to the InputScript
Enter "/Oxxxx" process="s2.txt"
using p1 = "&V[selvalue]"