Hi

We are using Invoice and I have made a number of changes to the default php file to make it very specific to our company.  I am not really an expert in php but have managed to make the changes we require.

I have ammended the customer comment box so that it is a maximum of eight characters which then pulls into the Cart number on World Pay.  What I need though is for this input box to be compulsory entry.  I have put bold and capitals and underlined but people still don't read, don't enter and so makes allocation of payments impossible

Can anyone help me to do this, please?

Any help appreciated!