Processes the input of the field. 
      Syntax
         
         
            - 
            (
            SMPOpenUIProcessInputReturn
            ) 
            
               processInputExternalData
            
            : 
            (
            NSString *
            ) 
            value
         
      
      Parameters
         
         
            - 
               value – 
               the value to process. This is the path to the external data file.
            
 
         
       
      Returns
         SMPOpenUIProcessInputReturn result based on the value passed in.
      Remarks
         
         Returns the SMPOpenUIProcessInputReturn mask from processing the input.