External TXT simple prob

Hi there, I’ve got a little problem with an external loading of vars.

I want to _xscale an MC reading the var from the TXT file, I know I’m doing the loading well, because I have some dynamic TXT fields that reads the var, but not de _xscale property, the var in txt is: &webbar and the code is:

    this.bar._xscale = webbar;

but it doesn’t work Y_Y any solution please?

thanks for all