In the *Data handling* section of the *Add-ons* pane there are two options to control calculation and rendering of either menubar itself or other charts/extensions that support *calculation conditions*.

**Calculation condition**

Use the *Calculation condition* input box to define a Sense variable that is checked to be `true`

before the actual rendering (‘calculation’) takes place. It’s also possible to use any function or expression here. The *Displayed message* is the message to be shown unless the condition is `true`

and can be customized.

**Calculation condition variable**

The *Calculation condition variable* is the opposite of the *Calculation condition*: It is do define a variable that is set to `true`

as soon as menubar initialized all the default selections you may have set in *Single Selects* and to be used by other extensions supporting this *Data handling* feature.

To set the calculation condition variable automatically to |

**Dimension calculation**

The *Dimension calculation* switch toggles the calculation for dimensions used in menubar.

The Calculation is **disabled** by default, but in this mode it is not possible to use the same dimension multiple times.

If you have to use multiple dimensions or if you have a drilldown dimension, which contains some dimensions, which are already in the dimension list, you have to **enable** the calculation. In this case you could have some performance drawbacks.

Figure 49. The calculation condition properties in the *Data handling* section.