Limit on Help Text String in RTF Template field

Hi,

I am creating an RTF file to be uploaded into XML Publisher to be run as a Concurrent Program.

There is a requirement that if a certain condition is met then the cell should be coloured red.

I have consulted the XML Publisher Guide, and accordingly creating a field CH and trying to embed the xsl code tinto the "Add Help Text" tab to determine the cell colour.

My condition is slightly complex, but the "Add Help Text" section will only accept a character string approximately upto 138 characters, hence I am not able to insert the entire code.

Is there a way to increase the width of the "Add Help Text"  width, or is there a practicable workaround.