You can check it in the SFR view. If the SFR view is not displayed, You can display it by selecting [Window]> [Show View]> [Other ...]> [Debug]> [SFRs] of LEXIDE-U16 and clicking the [Open] button. You can search by clicking ‘>’ on the left side of All SFRs once on the SFR view to expand it, and then selecting [Find ...] from the pop-up menu displayed by right-clicking. SFR can be registered in the expression view by dragging and dropping.