Creating Simple Expressions

You can create simple expressions for use in While and Do Until loop types.

  1. Double-click the Loop component icon .
    The Loop Component Editor appears.
  2. From the Loop Component Editor, click While or Do Until from the Loop Type list.
  3. Click the Simple tab.
  4. In the Parameter list, select a parameter or click the button to create a parameter.

    You can sort the parameters in the list by component. Right-click in the list, and select Group Parameters. The setting is saved as a preference for this component. You can use the Preference option to set the initial default for this option for all applicable component editors. You can also choose to not group parameters for the selected component. For more information about these Preference options, see Setting Preferences in the Isight User’s Guide.

  5. In the Condition list, select the condition of your choice.
  6. Select Parameter or Constant from the box below the Condition list; based on your selection, select either a parameter using the corresponding list or enter a constant in the adjacent text box.
  7. Click the button to add your selection to the Conditions area in the center of the editor.

    Note: You can delete a condition from the Conditions area by selecting the condition and clicking the button.

  8. Repeat Step 3 through Step 6 for each condition you want to add.
  9. In the Conditions area, click the AND/OR column for any condition except the first one listed, and select AND or OR based on the type of condition you are creating.

    By default, once a second condition is added to the list, the AND operator is selected.

  10. Click in the open “(” or close parentheses “)” columns to determine if you want open/close single or double parentheses to group AND and OR clauses.
  11. You can use the Up button and Down button to rearrange the conditions.
  12. Your conditional expression may never be satisfied in some cases; therefore, you can specify a Maximum number of iterations after which Isight assumes the conditional expression is satisfied.
  13. Click OK to save your changes and to close the Loop Component Editor.