how to disable bomb timer on mvm map?

[girr]

how do i disable the bomb timer on my mvm map?
my map is very short and its easy to push back the bomb carrier so having a timer on the bomb is pointless. but when i set the return time to 0 or -1 on the bomb it goes back instantly instead of staying where it was dropped perminantly

 

[Startacker!]

Set the timer to something high, such as 60000

 

[girr]

Set the timer to something high, such as 60000

that actualy worked! thank you!