Referencing a dataset field

Hi guys,

Please see attached print screen. I have an expression to determine whether the first column of a table is visible. I have dragged the field type_id out of the dataset onto the report, so it now exists as a textbox that I am referencing in the top line of the expression. However i'm thinking that this is not required and I should be able to reference the field within the dataset itself (without the need for the textbox)?

Using the expression builder I created '=First(Fields!type_id.Value, "GetType")' which I believe I should be able to use to replace 'ReportItems!type_id.Value' but this doesnt seem to be the case?

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You can use First(Fields!type_id.Value, "GetType") instead of reportitem... But you still need to have IIF condition to return true or false to hide the column...And keep in mind that you are checking only the first row of the column to make the column hidden.

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