Try putting double quotes in the Value tab of your excel.
You may want to try removing the extension from the name of excel file.
Try Logging with config values to confirm that the config is being read properly.
If yes, try adding another read range with another excel file placed inside the project folder.
thank you. In order to see the values, could you please expand the display until we can spot anything interesting?
EDIT: I don’t have my studio here to check but I guess your dictionary is empty. You might want to check if the result of InitAllSettings is passed as expected to your in_Config.
EDIT: not saying that there is no dictionary but that your dictionary is empty.
EDIT 2: Please run the project in debug mode (F5)
Yes, that’s the case. Check in your Init state that by accident the Config value is not lost. You could also add an invoke workflow with InitiAllSettings just before using in_Config to see if the problem is not at InitAllSettings level