Building an Expression Using Existing Quantities

When you are entering an expression for a new output variable, you can insert part or all of the expression using the options in the Quantities and Function sections of the Output Variables dialog box.

Follow this procedure to add an input variable by inserting part or all of the expression:

1. Open the Output Variables dialog box in one of these ways:

• Select Twin Builder > Results > Output Variables.
• In the Project tree, right-click Results and select Output Variables.
• In the Report dialog box, click Output Variables.

The Output Variables dialog box appears.

2. In the Output Variables section, enter a name for the new variable in the Name box.
3. To insert a quantity:

1. From the Report Type drop-down list, select the type of report from which you want to select the quantity.
2. From the Solution drop-down list, select the solution from which you want to select the quantity.
3. From the Category list, select the type of quantity to enter.
4. From the Quantity list, select the quantity.
5. From the Function list, select a ready-made function (this option is the same as inserting the function from the Function section).
6. If applicable, from the Domain list, select the solution domain.
7. Click Insert Into Expression.

The selected quantity is entered into the Expression area of the Output Variables section.

4. To insert a function:

1. In the Function section, select a ready-made function from the drop-down list.
2. Click Insert Function into Expression.

The function appears in the Expression area of the Output Variables section.

5. When you are finished defining the variable in the Expression area, click Add to add the new variable to the list.
6. Repeat steps 2 through 5 to add additional variables.
7. When you are finished adding output variables, click Done to close the Output Variables dialog box.