AutoCAD Dynamic Block Scalebar and Automatic Visibility depending on Viewport

[kieran.leadbetter]

Hello, does anyone know how to make a dynamic block scalebar change its visiblity depending on the scale used within a viewport. 

They have the same names so Scale of 1:50, the Dynamic block has a scale called 1:50, the scalebars all look slightly different so I don't want to put fields into the block itself, I want it to automatically change the visibility depending on whatever the scale of the viewport becomes if that makes sense. Kind of like a link between the viewport and dynamic block?

Thank you

[h_s_walker]

You cannot link information inside a dynamic block to information outside a dynamic block.

You can however put the scale of the viewport in mtext as a field. See the image below. The grey text is the field and it is linked to the viewport (magenta line) and will update after a refresh if the viewport scale is changed

[kieran.leadbetter]

I tried that, but we plot our drawings at A1 due to a plotting issue at A3, but we still print them at A3, causing an issue in the object field to 2:1, any idea of how to get that field?

I've attempted for ages to adjust the field code so that instead of the field saying 1:#, I could change it to 2:#, 

Basically the scale used would be 1:100, but we would need to write in the scale box that the scale is 1:50 due to the paper being half the size

[h_s_walker]

If you don't use annotative objects, change the field from the standard scale to custom scale and then in the properties change the annotation scale of the viewport