Walter Montego: You said: As far as I use the words, they're interchangable in your example. Have to and must do not mean the same thing though. Have is a tricky word and has lots of meanings. Must is fairly straight forward. You left out "got" by the way.

So now that I looked back at my post, I started to wonder if I had put my question properly. By the word something in my examples, I simply meant that you as the ones who want to answer my question are free to put the proper actions in the place of 'something' that I used. But seems you as a native speaker didn't get what I meant. So my question must have been wrong.

Quite interesting that Farsi doesn't always correspond with English!