Help with INPUT and chekbox

[DrD]

According to Help Input Form:

{var_name, real, [{pos}]} to create a checkbox control. If real is >1 then this checkbox gets pooled ...

So use the value 0 for real, then your check boxes will be able to get checked independently:

Change this: {flg,2,{85,2, 5}}, {beg,1, {15,1,5}}
to this: {flg,0,{85,2, 5}}, {beg,0, {15,1,5}}