Appian FitNesse and multipleDropDownField

#AppianFitNesse
I'd like to know the best way to remove selected values from a a!multipledropdownfield() within a FitNesse script, the following methods have been ineffective:

1. Overwriting populated field with desired values:
| populate field | multipleDropdownField Label | with | Line, Angle, Triangle, Square          |
| populate field | multipleDropdownField Label | with | Square, Triangle                                        |

2. Using ' | clear field | LABEL | ' to remove all selected values:
| clear field | multipleDropdownField Label |

3. Using the ' | clear field | LABEL | of | VALUE | ' to remove selected values:
| clear field | Testing multipleDropdownField | of | Line                     |
| clear field | Testing multipleDropdownField | of | Line, Angle |

OriginalPostID-242972