i need help

[buntheun]

i need u all help make add-on for discount sub-total cos i need it so much pls kindly make for me 

[abolabo]

Try flexy promotion extension.
Please look into menu Extensions->extension store in your admin.

[buntheun]

it dont have what i need

[abantecart]

Are you sure? Promotion extension offers very complex configuration scenarios.

Please state clearly what you need to achieve.