Can I add extra fields?

Not really.

Paypal will only accept a limited data set and I’ve pretty much used all of them up.

The full list of what can be used is here: https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/

I wonder can ‘on0’ and ‘os0’ be use for extra text input fields. I have came across another plugin using these variables to get input fields successfully. (the info will be displayed as “option” in paypal checkout page)
Your plugin is great, but the code is too complicated for me to try putting the variables in, can anyone help???

I tried using on0 and os0 but they didn’t seem to work. I will have another go for you

I am not sure if it is appropriate to show another plugin name here, but let me know if you want to learn more..

I don’t have a problem with that, if I can see how they have coded it I can see if I can replicate it myself

Ytacc,
I’ve got this sorted. Contact me through the plugin website and I will send you an update for testing.

Never heard back from ytacc. The plugin has been updated and now shows the on0 and os0 fields.

Sorry, have been so busy. Great to see you sorted out this function and have it updated, good job!