I have a preprinted government issued invoice template. I transferred it to Acrobat and made a form. The issue is I have only the following fields:
Subtotal = subtotal
GST Rate = gstrate
Grand Total = where the calculation going to appear
Thus I need to calculate GST dynamically based on the rate entered gstrate field. Can anyone give me a hand? Most of the formulas calculate GST amount and add it to subtotal but I have no chance to do that.