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The Use of Formulas in Collections & Callback Commands

When you use collections with a member method that needs a callback method, many of you have asked us for a more straightforward way.

You asked; we delivered!

Starting with 4D v19 R6, 4D allows you to use a formula to define a callback in the collection member functions, the EXECUTE METHOD IN SUBFORM, CALL FORM, and CALL WORKER commands. If you can reduce your code to a simple expression, you can pass it directly into the formula without using a method.