Here I found the solution, although its a cheat to a timeline itself ;D.
As you can see, I’ve only used the ‘set new time’ pin and instantly I have plugged the ‘update’ pin into stop (to prevent continuous time evolving and fix it at a specific time). This makes me to somehow bring control on the time which is playing the role of a variable here. The ‘new time’ pin is in fact my variable (like x) that is going to fire out the function value ‘new track 0’ (like f(x)) from a specific range.
By applying this method, you will have the same functionality as I had asked above.
Regards.