MQ iSeries - *DEPTH Trigger not working

[CZR]

Hello

I am having trouble getting the Trigger to fire when using Trigger Type(*DEPTH) but it does Trigger when set to *ALL.

Has anyone ever had a similar issue?

Trigger type . . . . . . . . . . *DEPTH *SAME, *FIRST, *ALL..
Trigger depth . . . . . . . . . 1 1-999999999, *SAME
Trigger message priority . . . . 0 0-9, *SAME

This is my 1st exposure to MQ, I'm certain I just have a parameter wrong.

I know this isn't a lot to go on but hopefully enough for discussion.

Thanks