Can you post a test DWG of your block(s)?
... and an explicit description of your intent.
Thanks Kerry for your interests in helping me
My codes in post no #4 can change the Dimension style name to Standard , but I can not see the changes of the new style until I double click on the block to enter the block and close it after that to see the new changes .
The vla-regen does not work as it works with the other modifications on blocks .
Many thanks