[ic] validation field

[groove cube]

Hello list,

I need to check a field (i.g. 'address1') on condition that the field
called 'custom1' is equal to "1".

This is  my COMMON_ORDER_PROFILE in catalog.cfg

Variable COMMON_ORDER_PROFILE <<EOV

	fname=required
	lname=required
	address1=required <<<<<<<<<<<<<<<<<<<<<<<  only if the field 'custom1' = "1"
	city=required
	state=required
	zip=required
	company=required
EOV

Thanks for any help.
groove