When you change the contents of a cell in a spreadsheet, the formula in that cell, or in any cell referencing the changed cell, is not automatically recalculated. Instead, Maple displays cross hatches over the cell identifying it as a cell requiring recalculation. Evaluate the cell to refresh its value.

Select the cell or group of cells containing cross hatches.

Right-click (Control-click for Macintosh) anywhere on the cell or group of cells, and then select Evaluate Selection.