# DATALINKUPDATE Command [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [Commands](Help%20System/GSTARCAD/2022/Commands/(Commands).md) → [D](Help%20System/GSTARCAD/2022/Commands/D/(D).md) ## Function Description: This command is used to update data to or from an established external data link. ## Command Access: > **Icon:** / > **Menu:** / > **Ribbon:** / > **Toolbar:** / > **Command:** DATALINKUPDATE > **Alias:** / ## Command Prompts: Select an option \[Update data link/Write data link\] \<Update data link\>: ## Update data link Updates the linked data in a table in your drawing with data that has been changed in the external source file. - Select objects: Updates selected tables containing data links with data that has been changed in the external source file. - Data link: Specifies the name of a data link to update with data that has been changed in the external source file. Entering \[?\] lists the data links in the current drawing. - All data links: Updates all data links in all tables in the drawing with data that has been changed in the external source file. ## Write data link Updates the linked data in an external file with data that has been changed in a table in your drawing. - Select object: Uploads data that has been changed from the original linked content to the source file.