how to change object dropdownlist in vba code?

Hi bhupeshmulik,
Welcome to the forum.
The picture is really small and impossible to see what you are describing

Quote

Hi , i m a biginner for VBA code writing

We understand that you are a beginner, but you understand that the pictures is too small and you can not see anything from that picture ??? can you see something in your picture???
Attach a file.

Your pictures are still to small for anyone to offer any assistance. You have been asked to upload a file. Help us to help you by providing the information asked for.

Pictures are of little value. Honestly, no one wants to re-type your data to try and solve your issue even if we could understand them. Additionally, we would only be guessing at how your data was structured, ie. formulas, formatting, etc. Additionally, due to how some browsers behave, many of our members cannot see uploaded pictures/images. Please do not take this route.

Please attach a sample file that represents what you have. The structure of your attachment should be the same structure as your actual data. Any proprietary information should be changed.

Include in the attachment any code you're currently using (whether it works or not) and an "After" of what you wish the output to be.