If empty variable

[Bounty_y2k]

on(keyPress "<Left>") {
                if (_root.x11 = "") {
                    x11 = m1;
                    x12 = m2;
                    x13 = m3;
                    luckystrike();
            }
        }

This code should do on key press left to check if variable x11 is empty and if it is to change those 3 variables,but it does not do that it actually sets x11 to empty i mean it erases the data in that variable...why? i tried this too "if(_root.x11 = undefined)" its the same again...

[neilmmm]

double == sign for evaluating

  if (_root.x11 == "") {

does that work?

[anx]

by the way if you did it in AS3 it would give you a warnning message when you do an assinment in as1/2 you need to be more carful one qeuals(=) is to assign things and two are to compare ''=='

in your case your if statement was

if("")

or in other words you asked if empty string and the answer to that is always true as an empty string is something. just adding into what @neilmmm said.

[suresh02sd]

cool i didn't know that thanks.

[Bounty_y2k]

I still can't make it work...

on(keyPress "<Left>") {
                if (_root.x11 == "") {

                    x11 = m1;

                    } else {

                    x21 = m1;

            }
        }

It should do:
If variable is empty fill it,if its not fill other one...

[Prid]

Have you tried tracing your variables from inside that code to check if they're being targeted?

Try this:

on(keyPress "<Left>") {
                trace(_root.x11+" | "+typeof(_root.x11));
                if (_root.x11 == "") {

                    x11 = m1;

                    } else {

                    x21 = m1;

            }
        }

and post back what it displayed in the output panel!

[Bounty_y2k]

I got this as output:

x | string

x is just an text inside dynamic text field,when i erased the text (the "x") inside text field and tried again i got this output:

undefined | undefined