rails change value of parameter in controller

I have this controller

 def mymethod
  @theparam => (params[:valueoftheparam])
  @theparam => "3"
  callothermethodthatusetheparam
 end

So basically, I have "valueoftheparam" which is "2".

I need to change the value of "2" i开发者_如何学编程nto "3", and let "callothermethodthatusetheparam" the new param (which is "3")

however, "callothermethodthatusetheparam" in the end still used the old value("2").

How I can change this value in the controller, and let "callothermethodthatusetheparam" to use the new param value?

Thank you!

---

You have to modify the value directly, the instance variable does not point to the param, it just clones its value

params[:valueoftheparam] = 3

---

If you do like this, I am sure you will get 3 printed (@params will be "3")

def my_method
  @param = (params[:valueoftheparam])
  @param = "3"
  other_method
end


def other_method
  puts @param
end