Limit on number of worksheets using SimpleExcel module

[adi]

Hi all,

I am currently using the SimpleExcel / SimpleExcel::Big module to
write a excel spreadsheet with number of worksheets from perl. It
seems I have hit the limit on number of worksheets I can add (around
230) using this module.

Is this a real limit of Excel or some other module would help me get
around this problem and add a greater number of worksheets.

thanks for your help
adi