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You could access the length property of your dataProvider directly. Are you seeing items rendered by the repeater and later calling the numChildren? perhaps you are calling it before it has repeated everything?
The dataProvider length is the way to go.
If, for some reason, this is not what is needed, there aer other options.
Thanks for replying.
The dataProvider length is exactly what I need.
This is what Im trying, but it doesnt work, though it doesnt give me an error either: repeaterId.dataProvider.length
Apparently I missing something :)
What dataType is the dataProvider? When / how is it being set?
XMLList requires length() a METHOD, not property.