Highlight Actual Field

Having used this script in pdf documents I created it worked fine and I wanted to use it with a new form prepared with LC.

I placed the following in a Script Object called: color

color.current = new Array ("RGB", 0.5, 1, 0.5);

function gotf_color (classname){
var f = this.getField(event.targetName);
f.fillColor = color.current;
}

function lostf_color (classname){
var f = this.getField(event.targetName);
f.fillColor = color.transparent;
}

In the Field Event enter: gotf_color ("regular");

and in the Field Event exit: gotf_color ("regular");

under exit. When entering the field nothing happens.

Would someone be able to tell me whats wrong with my code?