I see... finally i did it with masks.. Specifically i made an hourglass than turned up side down when the down part filled.. It was more complicated than the simple glass..[especially for me(new guy)] anyway thanks a lot for the reply...!

hello everyone...
i would like to ask if anybody knows how can i drop a liquid in a glass and then the liquid take the form of the glass.. i have tried the mask using the onionskin but it takes so long and i am sure that there is an other way like particles or gravity or something.. thanks a lot