Is it possible to add variable values to the expert info?

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Hi

i'm working on my plugin c dissector and i would like to generate an expert info which shows the right value.

For example:

i compare two timestamps and if the delta of the timestamps is too long, i would like to generate the message:

"timedelta between t2 and t1 is too long, max value = ..." So i would have the tree with both timestamps, the delta time and the expert info.

Thanks

Robin