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# Data Update Functions

Note: The functions for multiple connections have been deprecated.

These functions change the data in fields.

vtc_retrieve_messages1 and vtc_retrieve_row change data as a side effect of popping data from the first row. They change data by shifting data up by a row. vtc_rotate* functions move data from the top to the bottom of the table.

Functions with a vts_multi.* format can be used in C# scripts. Click the C Language link to see the combined C and C# reference.

C Language | C# Language | Description
--- | --- | ---
vtc_clear_column | vts_multi.clear_column | Clears all data in a column.
vtc_clear_message | vts_multi.clear_message | Clears the data in a field.
vtc_clear_row | vts_multi.clear_row | Clears the data in a row.
vtc_increment | vts_multi.increment | Increments a counter stored in a field.
vtc_retrieve_message | vts_multi.retrieve_message | Pops the first field from a column.
vtc_retrieve_messages1 | vts_multi.retrieve_messages | Pops the first fields from specified columns.
vtc_retrieve_row | vts_multi.retrieve_row | Pops the first fields from all columns.
vtc_rotate_message |  | Retrieves the first field from the specified column and moves the value to the bottom.
vtc_rotate_messages1 |  | Retrieves the first field from the specified column and moves the value to the bottom.
vtc_rotate_row |  | Retrieves the first row and moves the values to the bottom
vtc_send_if_unique | vts_multi.send_if_unique | Sets the last field of a column to a value if the value does not exist in the column.
vtc_send_message | vts_multi.send_message | Sets the last field of a column to a value.
vtc_send_row1 | vts_multi.send_row1 | Sets the data in multiple columns.
vtc_update_message | vts_multi.update_message | Replaces the data in a field.
vtc_update_message_ifequals | vts_multi.update_message_ifequals | Replaces the data in a field if the current data equals a given value.
vtc_update_row1 | vts_multi.update_row | Replaces the data in a row.

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