# SimVar {{< image-center src="images/2_DevMode/vfx_editor/nodes/simvar_1.png" alt="The SimVar Node" >}} This **Node** can be used to retrieve a SimVar ([Simulation Variables](../../../programming-apis/simvars/simulation-variables/)) value. The output value will depend on the options you set up in the [Inspector](../menus/#h5) window: {{< image-center src="images/2_DevMode/vfx_editor/nodes/simvar_2.png" alt="The SimVar Options in The Inspector Window" >}} The available options are:   - ##### SimVar Selecting this will open a drop-down list of all the different SimVars available to you. {{< callout context="caution" title="IMPORTANT!" icon="outline/alert-triangle" >}} Only the following SimVars are currently implemented correctly: {{< /callout >}} SIMVAR\_STRUCT\_LATLONALT SIMVAR\_STRUCT\_LATLONALTPBH SIMVAR\_STRUCT\_WORLDVELOCITY SIMVAR\_STRUCT\_WORLD\_ROTATION\_VELOCITY SIMVAR\_STRUCT\_BODY\_VELOCITY SIMVAR\_STRUCT\_BODY\_ROTATION\_VELOCITY SIMVAR\_STRUCT\_SURFACE\_RELATIVE\_VELOCITY Other sim vars can still be used, and the majority will return a floating point (scalar) value. If the value being returned should be a boolean value, then 0.0 is considered "false" and anything greater than 0.0 would be "true".   - ##### SimVarIndex Here you can select the SimVar *index* value. Not all SimVars require this value, but it is needed for things like engines, where you need an index to indicate which engine you want to retrieve a value from.   - ##### Unit This is for setting the unit type of the SimVar being retrieved. It can be any one of those listed here: [Simulation Variable Units](../../../programming-apis/simvars/simulation-variable-units/)     ### Node Output The output of the node will very much depend on the SimVar that is being used to generate it, however **currently the supported SimVars will only return a 3 value vector**.