Fix time management issue

Change-Id: I88eb312d0fddf69e1faef6cf432b13b6af36e59d
add support for multi-value property

Change-Id: I4f0bd4a71e5ff01fe4390956ed4750e3b1c806e7
Merge topic 'pvw-web-viz-improvement' into next

417f206 add support for multi-value property
cdfb9a6 Fix time management issue