Forms :: Updating Record Must Be Exception To Query

SELECT COUNT(*)
INTO v_ctr
FROM leave_type_govt_service
WHERE (
:block_name.min BETWEEN minimum AND maximum
[code]......

This code in my forms really works for inserting a new record. But if I will update the record itself for example, in the table 'Type 1'

Minimum Maximum
1 5
6 10
11 15

and I will update the 6 - 10 to e.g. 7, It must update but my query includes 6 - 10 data so it raise the trigger failure.

Note: The AND condition in the last part is for unique types. Because even if e.g. 'Type 2' has a Min and Max data same as the 'Type 1' the trigger will not prompt.