Add Product and Popup Numerpad show for price V3

Hi, I Have a Sample Product when i add Sample Product a Popup Numberpad Show and i Add a Custom Amount.
PLease Help me urgent

Look here for a solution Discount Authorization

And also here Open Price Option

i am using SambaposV3 this method working on V3 Also ?

No. These are V4 solutions.

You will have to use the Change Price button in V3.

PS - This is the V4 forum not V3. If you are going to post here, please state V3 in the title so we can answer you better.