ZCL_CLUSTER_ID_GEN_TIME cluster

Hi,

I want to syncronize all zigBee devices with same UTCtime.

I'm thinkin to use ZCL_CLUSTER_ID_GEN_TIME, to send a zcl_SendReportCmd() with both attributs:  ATTRID_TIME_STATUS and  ATTRID_TIME_TIME.

 1 --> This is the right way?

 2 --> The dataType of ATTRID_TIME_TIME is a ZCL_DATATYPE_UTC... this is a uint32? or a UTCTimeStruct? or another?

 3 --> How I declare the  ZCL_DATATYPE_UTC atribute?