How to change the current MTTR by running flexscript commands

I wanna make a flexsim model, in which the MTTB/MTTR entities are really necessary.Because I wanna set some Processor entities beakdown.However, it was found that the once MTTR parameters were set, it was like
fixed and unabe to be changed as needed . In other words, once a Processor breaks down
under the control of MTTB / MTTR entities it has called, all the parameters contained in MTTB / MTTR has been triggered immediately after the calling, and the running flexscript commands
fails to change the MTTR of the current breakdown required by logic of programs ,but succeeds
in the next time.
So if I want to change the current MTTR by running flexscript commands, what I got to do?
Would you please show me an example?

Did you found and read this thread?

Several MTBF/MTTR for 1 processor ?

I just used the Search function in the forum and searched for "MTBF change".
I hope the thread and the examples give you the right answers.

If not, please feel free to ask again.