REST api POST

[Parul-Kudtarkar]

Hi,
Can you please help me figure-out what is the exact API call to region-search
This Input JSON should have worked and should have rendered all the files that overlap the region, but this gives ""SearchPhaseExecutionException" :
{
"_index": "chr18",
"_type": "hg19",
"_source": {
"position": [
{
"start": 142401,
"end": 142401
}
]
}
}

Thank you very much,
Parul