I am finding that the only way to be sure that a control based on a symbolic recalculates is by sending it a CALCULATE event. However, even without doing so, some of my controls seem to recalculate appropriately based on their symbolic dependencies on other controls in the form, and some do not. I can't seem to decipher what determines whether a control will automatically recalculate. Is there any available information about symbolic dependencies?

This is an invoice form. The independent ("real") variables I have are ship location, discount, line item (i.e. some are taxable and some not), quantity and price. These affect {TAX_RATE}, {EXTENSION}, {TAXABLE_AMOUNT}, {DISCOUNT_AMOUNT}, {INVOICE_TOTAL} etc. Changing any independent variable generally causes a need for a cascading series of recalculations. I finally put approprate code in the CHANGED event of all relevant controls to SEND_EVENT "CALCULATE" to all the dependent controls in order, but I was wondering if there was info on the "automatic" recalculation dependencies.

Thanks,

David

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