as per 
https://www.microfocus.com/documentation/arcsight/arcsight-smartconnectors/pdfdoc/amazon-web-services-s3/amazon-web-services-s3.pdf   p24

I followd the section to add a custom parser for awsS3 and created a file in \current\user\agent\fcp\awss3\awss3_parser_configuration.properties with below content: (more or less)

parser.type.count=8
parser.type[0].devicetype=MyType
parser.type[0].description=MyType - Logs
parser.type[0].filetype=
parser.type[0].parserfolder=awss3
parser.type[0].parserfile=myTypeFile
parser.type[0].parserclasstype=7

I also created a file myTypeFile.jsonparser.properties in the same folder.

that works perfectly.

However - I have to use more than one jsonparser, as the data i get is like audit, alarm and error logs. which share a common json section, but each type has its own special json objects.
therefor i  would like to use 
"__subParse" as described in the FlexDevGuide.

I added this to my json parser,

token[1].location=event/facility
token[1].name=facility
token[1].type=String
token[1].format=__subParse(myType.subparsers.map.csv)

[ERROR][com.arcsight.agent.sdk.d.b.d] [getMap]java.io.FileNotFoundException: config/agent/myType.subparsers.map.csv (No such file or directory)

Any suggestions?
SCFW is 8.4.4

Thanks A