Adding scripts?

[#1]

I'm trying to figure out how to have one drop down menu's options affected by another drop down menu's options.

So for example Box A drop down has options 1, 2, 3, 4

If I choose option 1 I want box B drop down to have options Red and blue, but if I choose option 2 I want the box B drop down to have Green and yellow.

I cannot remember what options to choose if anything, and need help figuring out what properties I need to change, or how to edit the script.

[#2]

I'm trying to figure out how to have one drop down menu's options affected by another drop down menu's options.

So for example Box A drop down has options 1, 2, 3, 4

If I choose option 1 I want box B drop down to have options Red and blue, but if I choose option 2 I want the box B drop down to have Green and yellow.

I cannot remember what options to choose if anything, and need help figuring out what properties I need to change, or how to edit the script.

[#3]

Look at the sample:

Dependent Lists – practicalPDF

[#4]

The basic code is quite simple. Use this as the custom validation script of the first drop-down field:

if (event.value=="1") this.getField("B").setItems(["Red", "Blue"]);

else if (event.value=="2") this.getField("B").setItems(["Green", "Yellow"]);