automatically adding a percentage to an amount

Hi Tuan
I am trying to automatically add an additional 3 percent to the amount entered by the customer in the Amount text field.
Where would I add this --- [FIELD_VALUE]*(1+0.03) --- to achieve that?
The form can be viewed here - Live form example
Kind regards
Stephen Hutton

I don't think this is possible with core amount field. Maybe you will need to create a new textbox custom fee field, replace that amount field with the new field you created

Set fee formula of the new field to [FIELD_VALUE]*(1+0.03) and it might work (seems you are using an old version, so I am not sure)

The reason you have to create new field to replace the core amount field is because of the way the extension is coded (in old version), you could not use Fee Formula for amount field

Tuan

Hi Tuan - I'm using Payment Form version 3.2
I am having trouble understanding and trying to implement your suggestion.
If I sent you logon access would you be able to edit the form for me?
Or can you recommend someone to do this?
I would be happy to pay for this service.

I have attached a word doc with screenshots to explain it clearly.
Many thanks Stephen

Hi Stephen

Maybe customizing the code will be needed. Please submit a support ticket sending us super admin account of your site so that we can do it for you

Maybe you should upgrade to latest version of Payment Form first ? It would make our work easier

Tuan

Hi Tuan
I have just purchased and downloaded Payment Form version 3.7.
Could you please advise the upgrade process required.
(I don't want to lose any stored payment data)
Once upgraded I will send you your super-admin logon details via a support ticket.
Cảm ơn bạn đã giúp đỡ của bạn Stephen

Just install the new version over old version. But you should make a full backup of your site first before installing so that in case something doesn't work as expected (which I don't think so), you can roll back.

Tuan