Scripting: Get Screen Text

I am trying to write a script that will capture user login information and send it to a log file on the scanner. I modified the example script slightly and am wondering how to remove the Ask feature. I don't want to ask the user, I just want to capture this information in the background so i can report it. The user should not even know the script is running.

Script(Get_Screen_Text_Test)

String(strScreenText)

Number(nRow)

Number(nColumn)

Activate(Connection)

  Logging_On( "\\UserID.txt", TRUE )

  nRow = Ask_Number("Enter row, top row is 1", "Get_Screen_Text_Test", 1, 99, 1)

  nColumn = Ask_Number("Enter column, left-most column is 1", "Get_Screen_Text_Test", 1, 99, 1)

  strScreenText = Get_Screen_Text(nRow, nColumn)

  Logging_Off

  Return

Thanks in advance for any advice!