ArcGIS Pro Active Map Metadata Object is Read-only when accessing via ArcPy

Question

I'm using ArcPy to get the current aprx, active map, then to create an empty metadata object, and populate it with values from a fGDB table, but I cant copy and save it back to the read only map metadata object.

I'm using the metadata object as documented at Metadata in the ArcGIS Pro Online Help.

m = aprx.activeMap
m.name = Title #set the map elements name to the same as the title
# create empty metadata object and populate it with our varibles
new_md = md.Metadata()
new_md.title = 'Title'
new_md.tags = 'Tag1, Tag2'
new_md.summary = 'Summary'
new_md.description = 'Description'
new_md.credits = 'My Credits'
activemap_metadata = md.Metadata(m) #the metadata object for the active map
if activemap_metadata.isReadOnly:
 arcpy.AddMessage("the metadata object for the active map is read only")
else:
 activemap_metadata.copy(new_md)
 activemap_metadata.save()

I'm open to ideas

Answer 1

Replace the line:

activemap_metadata = md.Metadata(m)

with the line:

activemap_metadata = m.metadata

Answer 2

This works; @Brennan

 m = aprx.activeMap
 m.name = Title 
 map_metadata = m.metadata 
 map_metadata.title = Title
 map_metadata.summary = Summary 
 map_metadata.description = Description
 map_metadata.tags = Tag
 map_metadata.credits = Credits
 map_metadata.accessConstraints = Terms
 map_metadata.save()