Getting Stories list using estimation range from an Epic

[kranthi kumar goud nacharam]

I create an Attribute, It is successfully running in url  but, when I'm trying to implement in java sdk It is not running.

Attribute:

"Epic.SubsMeAndDown:Story[Status.Name!='open';Status.Name!='in progress';Status.Name!='ready for estimation';Status.Name!='ready for sprint';AssetState!='Dead';Estimate>='0';Estimate<='3'].@Count"

Java Exception:

com.versionone.apiclient.MetaException: Unknown AttributeDefinition: Epic.SubsMeAndDown:Story[Status.Name!='open';Status.Name!='in progress';Status.Name!='ready for estimation';Status.Name!='ready for sprint';AssetState!='Dead';Estimate>='0';Estimate<='3'].@Count

Please help me how to resolve it.

Thanks.