Assuming you have user.microapp.UseVXMLParams set to "N", the name=value pairs you add to the ToExtVXML[] array elements are going to be appended to the query string with an ampersand between them.
You can fill up element 0 with multiple pairs of name=value pairs, separated by a semi-colon. When element 0 is full, move on to element 1.
The maximum size of the element is 210 bytes, so if you wanted to you could create just an array of just one element and concatenate your name=value pairs separated by semi-colons.
This clashes with the CCB configuration, so most people tend to create the From and To arrays to work with CCB - because if you don't have 4 elements now and try to add them later, you would wish you had 4 elements in each. You can solve this problem with database surgery on the Logger DB but that makes most people nervous.
I don't think it really matters, but I confess I have never tried this. Will it work if you leave element 0 empty and put "application=HelloWorld" in element 1? I dare say it might.
Just be logical.
Regards,
Geoff
