@smitaranjan
According to your request, i made a two blocks which are you going to use and made a TBA_smitaranjan.lsp file. Also, see the attached video how it works (notice the text in leader which i put and you need to do before run TBA). Sorry for the poor quality of the video, due to the maximum total size that can be uploaded to the forum or download it from this link (better quality of the video) --> https://we.tl/t-IQvmdqDNYQ.
TBA_smitaranjan.mp4
Best regards.
TBA_smitaranjan.lsp DYNAMIC_BLOCK_1.dwg DYNAMIC_BLOCK_2.dwg