Troubleshooting Signal Trigger Input for Robot Position Capture

Hi everyone,
I have a signal trigger connected to the fast input J212 of the Controller CS9 for the Staubli TX2 90.
Then I wrote the following program to capture the robot's position:

setLatch(diLatch) 
delay(0)
bLatch = watch(getLatch(jPosition) == true, 5)

Previously, I used a button simulating trigger (turn on and off), and it worked fine.

Now, when I use an actual signal (as shown), it doesn’t work. Could it be that the signal is too fast, and the duration is too short for the robot to read and capture the position in time?

Do you have any advice for me?

Thank you for your help.
Best regards,
Vi

Hi everyone,
I’m debugging a program with the following code

if (watch(diLatch == true, 20) == false) {
    popUpMsg("Error: Waiting for signal");
    wait(diLatch == true);
}
if (diLatch == true) {
    setLatch(diLatch);
    delay(0.2);
    bLatch = watch(getLatch(jPosition) == true, 5);
}

Will it work or not?
Can someone give me advice?

Thank you for your help.
Best regards,
Vi