Conditional statement in pdf

Thanks! I was able to get it to work; however, I'm having trouble with
conditional statements using drop down list values now .

Below is my syntax

CGBddl is a drop down list... two of the choices are Manager and Director

What I want to happen is when a person selects the rank from the drop down
list, the value of a field = a static value (CVCT) multiplied by the % that
aligns with the rank selection. The only thing that is happening right now
with the script is the CVCT field is being multiplied by

var CGBddl = this.getField("CGBddl").value;
var CVCT = this.getField("CVCT").value;
if( CGBddl = "Manager" ) {event.value = CVCT * 0.04; }
if( CGBddl = "Director" ){event.value = CVCT * .06; }


Can you please assist by providing me some direction on how to get this
script to work properly?

Thanks! David