{
evel_json_open_object(jbuf);
evel_enc_kv_object(jbuf, "objectInstance", jsonobjinst->jsonstring);
- evel_enc_kv_ull(jbuf, "objectInstanceEpochMicrosec", jsonobjinst->objinst_epoch_microsec);
+ evel_enc_kv_opt_ull(jbuf, "objectInstanceEpochMicrosec", &jsonobjinst->objinst_epoch_microsec);
//evel_json_checkpoint(jbuf);
if (evel_json_open_opt_named_list(jbuf, "objectKeys"))
{