After ending the first task, it seems that it continues counting without remain after asking a new one.
I recommend the creation of a HUD for me to better detail what is happening to. But the fact is that the count is not being precise, I have changed up correctly in .lua

Script Forbidden Lands Hydras RP.

Local Kills = 494 --- How many Hydras have you killed on your task (X / 650) before starting this session?