short answer - don't..
longer answer, use a local variable to 'pick up' the data in table, then use that variable in the find statement
Set Variable [$yourvariable; Value:yourtable::yourfield] <note: $var is a local variable in that script only, or $$var is global for the whole file>
Go To Layout ["yourlayout" (yourtable)]
Enter Find Mode
Set Field [yoursecondtable::yourfield; $yourvariable]