Fitnesse - How to retrieve particular value from the Grid and assign it to the particular variable for validation? How can I compare two values ? Is there a way to use if condition here ?

use below to get the value fron grid and store it in variable name.
|$variabename=|get grid |GRID_NAME or [GRID_INDEX] or GRID_NAME[INDEX] |column |COLUMN_NAME or [COLUMN_INDEX]|row |[ROW_INDEX] |value |

then use below to verify if the value is available in the grid. (replace VALUE with variablename)
|verify grid |GRID_NAME or [GRID_INDEX] or GRID_NAME[INDEX] |column |COLUMN_NAME or [COLUMN_INDEX]|row |[ROW_INDEX] |contains value|VALUE |

The First script is not working and I see the "Invalid Argument: get field value - " please advise

The First script is not working and I see the "Invalid Argument: get field value - " please advise