Disable a field based on another field Value

Hello Experts,

I'm newbie in this language

I have a issue where I have a combo box  that use a NoYesCombo enumeration, depends of value selected in the combo box

I will disable another field in the form

e.g If the combo box value is set to yes, the other field will be enable

e.g if the combo box value is set to no, the other field will be disabled

I will appreciate your help soon

Thanks for all