To include a parameter in a grid search in Flow, check the checkbox in the Grid? column to the right of the parameter name (highlighted in red in the image below). 
  
- If the parameter selected for grid search is Boolean (T/F or Y/N), both values are included when the Grid? checkbox is selected. 
- If the parameter selected for grid search is a list of values, the values display as checkboxes when the Grid? checkbox is selected. More than one option can be selected. 
- If the parameter selected for grid search is a numerical value, use a semicolon (;) to separate each additional value. 
- To view a list of all grid searches, select the Model menu, then click List All Grid Search Results, or click the Assist Me button and select getGrids.