Insert Null to Database without query (Columns type are Boolean and Float)

Dear All,

I am trying to Insert Null to 2 columns in a particular record.

Condition:

- if value of Acquired Signal < Threshold, write NULL (not numeric 0) to 'SensorVoltage' and 'ProductProximity' columns.

SensorVoltage column is 'float' datatype ----- I need to insert Null here (not 0)

Product Proximity is 'Boolean' datatype ----- I need to insert Null here (not 0).

I saw a few methods to do so using query, but i can't do so since the acquired signal 'SensorVoltage' is acquired in realtime (not from a historic DB that a query can be run on).

Also, there was a method that used 'DB Tools Null.vi' to generate a 'NULL'. The problem while using this VI from Database Toolkit is that, the cluster i am making (which would then be converted to a variant), requires float and boolean input. The aforesaid vi gives a NULL output, but the datatype is 'variant' (which when trying to convert to boolean or float, gives an error).

Any suggestions ?

Thanks for reading, helping and suggestions.

- Nishant Patel