Gravity Forms Custom Integration

I have a Gravity Form that has 10 text fields. When the work order is entered in, the form needs to automatically display the Company Name and Description below the text fields. It needs to automatically populate without having to press submit. If no Work Order number is found, a message needs to display saying "No Work Order Found" There is a text document on my server that contains the information in the following format: 12345, Company Name, Description. The first is a work order number, the second is the company name, and the third is the description of the work. This would work similar to conditional logic where if text field = 12345, display HTML block, but be more dynamic by matching info from a txt document and displaying that information.