Wire the OPC UA variable node refnum out output of the Add Property VI or the Add Item VI to the reference input of a standard Property Node to get the Variable Node Property Node. This Property Node has the following properties:

Property Description
Historical Data Access Whether historical access is available. Details
Historical Data Queue Size The size of a historical data queue. You can add a historical data queue to an item, property, or condition. A history data queue can store 1000 units of history data. Details