Hi @Andrew_Wathen_ , @Brian_Johnson_ thanks for the reply.The behavior only triggered this one rule..I had a breakpoint in the rule, and I found that before send beacon action, the eVars are set right values, but when send beacon was triggerred, eVar values changed! Please refer to below screenshots...

Hi @Brian_Johnson_ thanks for the reply. I am not sure if I am resetting s.linkTrackVars somewhere else...i mean in the same rule I only have in the beginning of the code to set s.linkTrackVars, and in other rules definitely we set s.linkTrackVars for every rule right?do_plugins I am not sure how to...