Checkbox help

[default8gz9guyja9sw]

Hi All, 

I have a form that I'm having some trouble with. 

I have 3 text boxes: 

Text8.1.1

Text8.1.0

Text8.2.0

I want to disable them (gray them out) making them unable to be edited unless Check Box18 is checked. 

If Check Box 18 becomes checked, I want them to become fillable. 

Any help?? 

[Nesa Nurani]

If by 'grey them out' you mean to set them to read only or editable, you can use this code as Mouse UP event of checkbox field :

this.getField("Text8.1.1").readonly = event.target.value == "Off" ? true : false;
this.getField("Text8.1.0").readonly = event.target.value == "Off" ? true : false;
this.getField("Text8.2.0").readonly = event.target.value == "Off" ? true : false;