The first thing you need to know is how to reference a column within a OpenGround Cloud data grid. To do this you need to use the syntax [Group.Field] and ensure that both the Group name and field name are capitalised correctly and the combination is surrounded by square brackets.
[SampleInformation.DepthTop]
It is important to note that the names used are the field and group names and not their header titles. So in the example above you will see the SampleInformation and DepthTop values are the values in brackets in the Template Studio interface.