Use the Stored Information
The next step is to use the contents of the variable to derive the name of image file created by the Take Video Snapshot action. Delete the default name in the "Save as" text input field, and then drag the variable from the Variable Table to the text input field.
Once you have placed the variable in the text field, click the cursor to the right of the variable and enter the name extensions ".tif" to indicate the image is a TIFF file. The name of the image file will be whatever the user has entered in the Ask for Text dialog (when the workflow is run), plus the name extension.
Choose the Party Pix folder you created earlier as the destination for the image file, by clicking the "Where" popup menu, and selecting "Other..." from the menu.
Finally, select the checkbox labeled "Take picture automatically" so that the image file will be generated without any user-assistance.