Notes/Domino 4 and 5 Forum

Need to return value

View have three columns.
1. Group
2. Sub-Category
3. Code

Form have group and code field
When user input group value, need to get view value base on group value, Then user select sub-category, I need return Code value into form ? how to do this ?

View data like below
Gourp,Sub-Category, Code
1,BATTERY, C1
1,BOX , C1
2,FOAM , C1
2,FORM , C2