I may answered wrong question. If you want to check if property exists, use PEMSTATUS()

* Does property exist?
? PEMSTATUS(myobject, "myproperty",5)

The code I posted originally, checks if existing property holds an object reference
There's a typo in it. The property reference should not be enclosed in the quotes. Sorry about that.

* Is property an object?
IF VARTYPE(myobject.myproperty) = "O"

* For example
myobject = CREATEOBJECT("Empty")
ADDPROPERTY(myobject, "myproperty")
? VARTYPE(myobject.myproperty)
myobject.myproperty = NULL
? VARTYPE(myobject.myproperty)
myobject.myproperty = CREATEOBJECT("Empty")
? VARTYPE(myobject.myproperty)

>Thanks, that works great. Don't know why my brain is having a hard time with vartype these days. :)
>>

>>IF VARTYPE("myobject.myproperty") = "O"
>>

>>
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