I'm not sure I understand what you are trying to compare in the string compare... Are you trying to check if the draft year is less than a specific year in the String Value block?
If so, then "string compare" is not the block you want to use, because String Compare does a textual comparison like sorting strings (e.g. 100 would be considered less than 20); it won't do a numerical comparison between two years. For a numerical comparison you would want to use the "smaller than" block.. If you can provide a more detailed description of what you are trying to do (compare) I can make the visual logic and send you a screenshot.
#XPression