Regarding ValueRank and ArrayDimensions|OPC UA Standard|Forum|OPC Foundation

Hi,

Variables exposed via our server don’t have any real constraints except theoretical memory limits. They can be scalars or arrays of arbitrary dimensions.

According to Part 5 section 5.3:

ArrayDimensions

If the ValueRank does not identify an array of a specific dimension (i.e. ValueRank <= 0) the ArrayDimensions can either be set to null or the Attribute is missing. This behaviour is server-specific.
If the ValueRank specifies an array of a specific dimension (i.e. ValueRank > 0) then the ArrayDimensions Attribute shall be specified in the table defining the Variable.

Would setting ValueRank to -2 (i.e. Any: the value can be a scalar or an array with any number of dimensions) and ArrayDimensions to null/missing be a correct interpretation of the specs?

Many thanks!