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# Data Update Functions

These functions change the data in fields.

lrvtc_retrieve_messages1 and lrvtc_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. lrvtc_rotate* functions move data from the top to the bottom of the table.

The C Language references include the information on the C# and the Java functions.

C Language | C# Language | Java Language | JavaScript | Description
--- | --- | --- | --- | ---
lrvtc_clear_column | vts.clear_column | Lrvtc.clear_column | lrvtc.clearColumn | Clears all data in a column.
lrvtc_clear_message | vts.clear_message | Lrvtc.clear_message | lrvtc.clearMessage | Clears the data in a field.
lrvtc_clear_row | vts.clear_row | Lrvtc.clear_row | lrvtc. clearRow | Clears the data in a row.
lrvtc_increment | vts.increment | Lrvtc.increment | lrvtc.increment | Increments a counter stored in a field.
lrvtc_retrieve_message | vts.retrieve_message | Lrvtc.retrieve_message | lrvtc.retrieveMessage | Pops the first field from a column.
lrvtc_retrieve_messages1 | vts.retrieve_messages | Lrvtc.retrieve_messages1 | lrvtc.retrieveMessages1 | Pops the first fields from specified columns.
lrvtc_retrieve_row | vts.retrieve_row | Lrvtc.retrieve_row | lrvtc.retrieveRow | Pops the first fields from all columns.
lrvtc_rotate_message | vts.rotate_message | Lrvtc.rotate_message | lrvtc.rotateMessage | Retrieves the first field from the specified column and moves the value to the bottom.
lrvtc_rotate_messages1 | vts.rotate_messages | Lrvtc.rotate_messages1 | lrvtc.rotateMessages1 | Retrieves the first field from the specified column and moves the value to the bottom
lrvtc_rotate_row | vts.rotate_row | Lrvtc.rotate_row | lrvtc.rotateRow | Retrieves the first row and moves the values to the bottom.
lrvtc_send_if_unique | vts.send_if_unique | Lrvtc.send_if_unique | lrvtc.sendIfUnique | Sets the last field of a column to a value if the value does not exist in the column.
lrvtc_send_message | vts.send_message | Lrvtc.send_message | lrvtc.sendMessage | Sets the last field of a column to a value.
lrvtc_send_row1 | vts.send_row1 | Lrvtc.send_row1 | lrvtc.sendRow1 | Sets the data in multiple columns.
lrvtc_update_all_message_ifequals | vts.update_all_message_ifequals | Lrvtc.update_all_message_ifequals | lrvtc.updateAllMessageIfequals | Replaces a value in the specified columns.
lrvtc_update_message | vts.update_message | Lrvtc.update_message | lrvtc.updateMessage | Replaces the data in a field.
lrvtc_update_message_ifequals | vts.update_message_ifequals | Lrvtc.update_message_ifequals | lrvtc.updateMessageIfequals | Replaces the data in a field if the current data equals a given value.
lrvtc_update_row1 | vts.update_row | Lrvtc.update_row1 | lrvtc.updateRow1 | Replaces the data in a row.

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