Amount of measurement report

Hi experts,
I need to know what is the exact meaning of the parameter reportAmount=r2 in NR. I am configuring an eventTriggered (A3) meas report for HO. Also reportINterval =ms120. I thought it was the number of measurement report that UE was supposed to send as for NW instruction but from logs I can se that the UE is sending more than 2 reports. It is not clear to me from spec 138.331 how these parameters are used for event-triggered HO.
Thanks for your help and looking forward to reading some answers.