How do I... find and replace text in metadata tags?

A screengrab and downloadable workflow can be found here.

Setting up the Workflow

1. Use a Source Node to get the images.
2. Use a Text Node to retrieve the tag you want to copy.
3. Use a second Text Node to replace the mis-typed words.
3. Add an Action Node to set the value of the second tag, making sure that you set it to use the text passed through from the Text Node instead of a fixed value.