When configuring the net_connect probe, custom messages were created for Threshold and Packet Loss.
When configuring the profile, these custom messages cannot be selected. Only the default OOTB messages can be selected.
The messages have a token that denotes in which section they are available.
The possible tokens are
The correct token must be set to make the message available in the required section of the probe.
Edit the custom messages and set the correct tokens.