Set Error Capture
Purpose 
Suppresses or enables normal FileMaker Pro alert messages.
Format 
Set Error Capture [<on or off>]
Options 
 •
On suppresses FileMaker Pro alert messages and some dialog boxes. If the error result is 100 or 803, then certain standard file dialog boxes are suppressed, such as the Open dialog box.
 •
Off re-enables the alert messages.
Compatibility 
 
Where the script step runs 
Supported 
FileMaker Pro 
Yes 
FileMaker Server scheduled script 
Yes 
FileMaker Go 
Yes 
Custom Web Publishing 
Yes 
Instant Web Publishing 
Yes 
Runtime solution 
Yes 
Originated in 
FileMaker Pro 6.0 or earlier
Description 
Use this script step to handle errors in a manner consistent with the functions the script performs. By using the Get(LastError) function immediately after a script step, you can verify that the step was performed properly.
By using the Get (LastError) function with the control script steps, you can make sure your script performs correctly. When you decide to suppress alerts, it is important that you anticipate as many problems as possible and include clear instructions for what to do when an error condition is encountered.
Note  Use Get (LastError) immediately after the script step you intend to test; a successful intervening step may clear the error code you were intending to capture.
Examples 
Set Error Capture [On]
Perform Find [Restore]
Set Field [Table1::gErrorCaptureField; Get (LastError)]
#The field Table1::gErrorCaptureField is a global text field
If[Table1::gErrorCaptureField <> 0]
Show Custom Dialog ["Couldn't find the record..."]
End If
Set Error Capture [Off]
Related topics 
Script steps reference (alphabetical list)
Script steps reference (category list)