Use this forum. Good luck.

https://www.comsol.com/community/forums/general/thread/1/

Hi Subhasish,

You see the variable or parameter used in the COMSOL model after computing initial results. To do this just right click on the study (Stationary or Time dependent) and compute initial time step. After doing this, In results you can use 1D plot-->global graph--> and the variable you want to use.

Use this variable in --> global definition --> Variable, For further computation.

Hope this helps.

Thanks Ismail...I got it.

So what you want to say is initially I need to set my basic physics by adding the modules and do a basic computation initially by clicking compute and then from results and 1D plot group I can get the default list of variables right??? Is that what you want to say??

Let me try

Thanks for the answer.

Also you can look for the "eye" in the model builder and activate "equation view", once you do that you will find that all the output and intermediate variables are shown under your physics node (e.g. mfnc, solid, etc.)

I got the answer actually. The simplest way is to add a probe. Then if we go to the probe section in the model builder and click replace expression, then we can find all the outputs with shortcut format of calling the parameters at any point in the program according to the added physics tree. 

I think my solution offer some advantages, since you can see also the expression of the variable, so you can find how it is calculated by the software, and you don't even need a probe. 

hmmm yes..that is more advantageous ...thanks anyways :)