# How to insert a "variable string" into "FILENAME" topic of "FILE IN" node?

**URL:** <https://discourse.nodered.org/t/how-to-insert-a-variable-string-into-filename-topic-of-file-in-node/38672>\
**Category:** General\
**Created:** [6 January 2021 18:20 UTC](https://discourse.nodered.org/t/how-to-insert-a-variable-string-into-filename-topic-of-file-in-node/38672 "2021-01-06T18:20:47Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [20 January 2021 19:00 UTC](https://discourse.nodered.org/t/how-to-insert-a-variable-string-into-filename-topic-of-file-in-node/38672/4 "2021-01-20T19:00:24Z")

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