Forum Moderator

There is, but it's not as simple as you may want. You will need to read the new profile every some timesteps, and know what the filename is for each update, then tell the boundary to use that new profile file. 

It may be safer to use a journal, or have a look at the Solution steering. A normal execute commands approach might work, note, if you add %t to the name when saving files it'll add the timestep number to the name, so file_%t  at the fifth timestep will be file_0005  (exact number of 0 may vary).