Copy Signature field from one form to another on user input

Copy Signature field from one form to another on user input

Copying Signature(image) field from one form to another. For our business needs we would like to be able to copy our customer's signature from on form to another. But in trying this using Deluge, it appears this is not possible. Please confirm. The code looks like this, the problem line is commented out.

if(Offline_Work_Order[ID == input.Offline_Work_Order].count() > 0)
{
temp = Offline_Work_Order[ID == input.Offline_Work_Order];
input.Job_Facility = temp.Job_Facility;
input.Signer_Name = temp.Signer_Name;
input.Signer_Email = temp.Signer_Email;
input.Service_Tech = temp.Service_Tech;
input.Service_Hours = temp.Service_Hours;
input.Mileage = temp.Mileage;
input.Service_Description = temp.Service_Description;
//input.Customer_Signature = temp.Customer_Signature;
input.Service_Date = zoho.currentdate;
input.Status = "Open";
}