AJO formatDate contextual attribute
I wish to format a contextual attribute coming from an event in a journey.
I have tried a few variations below for the snippet but none have worked so far.
{%= formatDate(context.journey.events.``1527359670``._tester.modifyDate, "DD MMMM YYYY K:mm a") %}
Invalid syntax Error in parsing PQL expression "formatDate(context.journey.events.``1527359670``._tester.modifyDate, "DD MMMM YYYY K:mm a", "en-NZ")": line 1:34 token recognition error at: '``'. Error beginning at position: Line 1, Character 1
{%= formatDate(context.journey.events.`1527359670`._tester.modifyDate, "DD MMMM YYYY K:mm a") %}
Invalid syntax Usage of function "formatDate" does not match available signatures. Usage: [PQLSchemaImplJson({"meta:xdmType":"string"}), PQLSchemaImplJson({"meta:xdmType":"string"})] Signatures: [(List(PQLSchemaImplJson({"meta:xdmType":"date-time"}), PQLSchemaImplJson({"meta:xdmType":"string"}), PQLSchemaImplJson({"meta:xdmType":"string"})),PQLSchemaImplJson({"meta:xdmType":"string"})), (List(PQLSchemaImplJson({"meta:xdmType":"date-time"}), PQLSchemaImplJson({"meta:xdmType":"string"})),PQLSchemaImplJson({"meta:xdmType":"string"}))]. Error beginning at position: Line 1, Character 1
{%= formatDate(context.journey.events.1527359670._tester.modifyDate, "DD MMMM YYYY K:mm a") %}
Invalid syntax Error in parsing PQL expression "formatDate(context.journey.events.1527359670._tester.modifyDate, "DD MMMM YYYY K:mm a")": line 1:10 mismatched input '(' expecting <EOF>. Error beginning at position: Line 1, Character 1
Any advise or suggestions are appreciated.