multiple line block attribute - single line modification

[lazzerisimone]

Good morning to all,
I would need help to figure out if there is a way to change an attribute of a block set to multiple lines and bring it to a single line.
I better explain: if a single-line normal block attribute "transform" into multiple lines setting "yes" on multiple properties >line I can then make the opposite passage or turn an attribute already set to multiple lines in single row (the selector once set on "yes" stops and can't set it on no to return to single row)?

Thank you very much.

 

[TETRASTORE]

you may refer to This is?

 

[lazzerisimone]

Yes, I was wondering if there was a way not to remake the block with a new attribute and have to redefine it since I have many blocks to which I should apply this modification.

 

[TETRASTORE]

Given your particular need we expect an experienced autocad user to confirm this possibility or not.