University program vwf

hello

i have 3 verilog files and three vwf file correspond to the verilog file

ex: first.v, second.v, third.v, first.vwf, second.vwf, third.vwf

i know that if i want to run simulation on one of the vwf file, i have to set it to top entity.

ex: if i want to run simulation on third.vwf, i need to set third to top entity.

The first and second vwf window that showed up was correct but when i try to run the third, it showed up the second vwf window even though i already set third to top entity.

Can i know where is the problem and how do i fix it so that come up with correct window.

p/s：third is the module that combine first and second