Can i out the value of a value not located in the IOprocessors?

[ztdepztdep]

I'm working with a Multifab data structure and I want to monitor the value at index (50, 90). However, there's a possibility that this particular index might not be present in the I/O processor.
My question is: Can I still output the value using print functions, even if the index is missing?

[WeiqunZhang]

amrex::printCell( my_multifab, amrex::IntVect(50,90)); (for 2d)

https://amrex-codes.github.io/amrex/doxygen/namespaceamrex.html#a376ff66b5e6a76d195cace00df41d05e

[ztdepztdep]

amrex::printCell( my_multifab, amrex::IntVect(50,90)); (for 2d)

https://amrex-codes.github.io/amrex/doxygen/namespaceamrex.html#a376ff66b5e6a76d195cace00df41d05e

How to monitor its value , i.e. assign the value at (50,90) to a variable,then broadcast it to all the other processs.