# fsVarsGetBVarId<no value>
The **fsVarsGetBVarId** function can be used to get the `FsBVarId` of a specific `BVar` using its name and its preset.

 

##### Syntax

``` wasm
FsBVarId fsVarsGetBVarId(
    const char* bVarName,
    bool callable,
    FsObjectId target
);
```

 

##### Parameters

<table><thead><tr class="header"><th>Parameters</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>bVarName</code></td><td><p>The name of the <code>BVar</code> and optionally its preset ("<em>name[_preset]</em>").</p></td></tr><tr class="even"><td><code>callable</code></td><td>A boolean indicating if the <code>BVar</code> can be called.</td></tr><tr class="odd"><td><code>target</code></td><td><p>The ID of the object from which the variable is being retrieved.</p></td></tr></tbody></table>

 

##### Return Values

The function returns the correct ID associated to the given name. If an error occurred, the function will return `FS_VAR_INVALID_ID`.

 

##### Example

``` wasm
FsBVarId BVarId = fsVarsGetBVarId("AUXILIARY_SUNSHADE_ADJUST_PILOT", false); // valid in DA62
FsBVarId BVarId = fsVarsGetBVarId("AUXILIARY_SUNSHADE_ADJUST_PILOT", true); // NOT valid in DA62, this preset is not callable
FsBVarId BVarId = fsVarsGetBVarId("AUXILIARY_SUNSHADE_ADJUST_PILOT_TOGGLE", false); // valid in DA62
FsBVarId BVarId = fsVarsGetBVarId("AUXILIARY_SUNSHADE_ADJUST_PILOT_TOGGLE", true); // valid in DA62
FsBVarId BVarId = fsVarsGetAVarId("toto"); // NOT valid in DA62, doesn't exists
```