detail add numerical multiplication calculation

[kdan]

i use "detail add", if i need this column (A1 * B2 = Subtotal_1)... And so on, How should i do.

[arbei]

See "Custom Field / Client Side Events" in demo project https://www.hkvstore.com/phpmaker/demo.asp.

[mobhar]

Just refer to the "orderdetails" table in the demo project for your references.