Block Join query

[Novin]

Hi Guys,

I'm trying  block join query, so I have tried   +{!parent 
which="doctype:200"}flow:624     worked fine. But when i tried +{!parent 
which="doctype:200"}flow:[624 TO 700]

Got the below error

org.apache.solr.search.SyntaxError: Cannot parse 'flow_l:[624': 
Encountered \"<EOF>\" at line 1, column 11.\nWas expecting one of:\n    
\"TO\" ...\n    <RANGE_QUOTED> ...\n <RANGE_GOOP> ...\n

Just wondering too, can we able to do range in block join query.

Thanks,
Novin