Combo box value

[NT1980]

Dear Sir/Mam,

Can you suggest me how can I multiply the vale which was selected in combo box with a text box ??

I have created form  of Final Invoice through Adobe pro 9. In that copy I have used the calculation method available to bring the total of amount. Now for calculation of GST(Tax) which  may varies from 5% to 18%. So I want to multiply the value of percentage which was selected in combo box with the Total amount mentioned in text box.

Regards,

NT

[try67]

If the fields are named GST and Total, use this formula under the Simple Field Notation option of the Calculate tab in the field where you want to display the result: Total * (GST/100)