InfoPath Dev

I need to compare the value in a text box to values in a separate drop-down list box. for instance if the value in the text is username and this value does not exist in the drop-down, then disable the another field. The problem at the moment is that the comparison is only working for the first drop-down value.

Hi, are the values in dropdown coming from a SharePoint list? 

Here is a thread that you may find helpful.

http://www.infopathdev.com/forums/p/9172/32453.aspx

Yes it works. I have tested it both with a drop-down using a sharepoint list or a drop-down using a sql connection.

 thank you so much