Referencing Integer in another BP? / casting

‘Puzzle Block’ does not inherit from ‘Character’ ( Cast To PuzzleBlock would always fail).
[0091.77] Compile of PuzzleBlockGrid successful, but with 1 Warning(s) [in 248 ms] (/Game/PuzzleBP/Blueprints/PuzzleBlockGrid.PuzzleBlockGrid)

Also here’s pic:

267551-puzzleblock.jpg