> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/acron-9.3/en/anlagenkonfiguration/prozessanbindung/dialog_filter-f-gruppen-u-variablen-import-extvar-aus-leitsystem.md). # Dialog - Filter for groups and variables to import external variables from the control system Import external variables from the running control system. For this the driver assigned to the Provider must support this function. Note Existing external variables are overwritten and/or moved after a prompt. With the filter, the number of variables to import can be restricted by entering a group name and/or a variable name. As wildcards asterisks (\*) stands for any number of characters or question marks (?) for exactly one character can be used. Regular expressions as well as AND- or OR-connections are not evaluated at this point. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.videc.de/acron-9.3/en/anlagenkonfiguration/prozessanbindung/dialog_filter-f-gruppen-u-variablen-import-extvar-aus-leitsystem.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.