How to change a hatch pattern on one layer

[Anonymous]

I am working on some architecture drawings. I would like to change the hatch pattern for one type of cellings. I know I can change the pattern on one ceiling object and match properties to the rest. However there are so many objects (ceilings), instead of clicking one by one (using match properties), is there any easier way I can do it once? All the ceilings are on one layer. 

Thank you very much. 

[leothebuilder · Accepted solution]

Isolate the layer, issue MPROP command, select source object, select with crossing window all destination objects.

[Kent1Cooper]

QSELECT can narrow its findings to Hatch Patterns, and to those on a specific Layer, and to those with a specific Pattern Name.  Once selected that way, the Properties box will let you assign a different Pattern Name to all of them at once.