How to clear/reset a ValueStream

[drichter]

Hey everyone,

I have a ValueStream which is connected to different things.

Now I will reset the hole ValueStream-object. I know I have to execute the "PurgePropertyHistory"-service, but I don't know what I have to enter in the field "propertyName". Can someone help?

[Aanjan · Accepted solution]

David, each Value Stream is dependent on its Thing. So running a purge on a Thing, will only clear out that Thing.

There are 3 different purges available on the Thing - PurgeAllPropertyHistory, PurgePropertyHistory and PurgeSelectedPropertyHistory.

• PurgeAllPropertyHistory - purges all logged properties on the Thing
• PurgePropertyHistory - purges a property that is logged (you need to give the name of the property that is logged)
• PurgeSelectedPropertyHistory - purges a list of properties on the Thing (takes an Infotable input of the properties you want to purge)

With that being said, you need to give a start and end date or it won't purge/ delete your data.

[drichter]

That help me a lot, but my thing has only the "PurgePropertyHistory".

[CarlesColl]

Hi David,

PurgeAllPropertyHistory and PurgeSelectedPropertyHistory was added on a later version, you should be on a "old" TW version.

Carles.