Custom Function While Making Invoice

Custom Function While Making Invoice

Hello,

while making invoice

"Quantity" Field Should be Updated by Multiplication of 2 "Custom Fields". (One "Custom Fields" is in PreSet Value, and One "Custom Field" Value in Entered Manually. (This is a Workaround i thought as Unit conversion is not possible)

is it possible? Please Help

Best Regards,
Atul Jain