I have a parent form with a field called CostPrice.

I have a subform with a field called RetailAdjust.

I want to create a calculated field called RetailPrice.

RetailPrice = (CostPrice + (-1 * RetailAdjust)

I can't work out how to fetch the CostPrice.

I probably have the rest of the equation right, bit some pointers would be great.

Thanks

Brendon