Finding fields that contain only a space with workflow rules

Finding fields that contain only a space with workflow rules

Hi,

We are attempting to send automated emails to leads which are created by a form on our website, only if there is NOT any information added in the description field. Unfortunately, the form Zoho creates inserts the non-breaking space in the Description input, so we cannot use the
  1. ${isempty}
check to see if a lead has not entered any data in that field.

How can we check for the space character using the workflow conditions? Entering just the space character errors out with the message "Please enter a valid (name of the field)."