# FarPoint.Win.Spread.FpSpread.AddCustomFunction

## Content

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<h1 id="FarPoint_Win_Spread_FpSpread_AddCustomFunction_" data-uid="FarPoint.Win.Spread.FpSpread.AddCustomFunction*">AddCustomFunction Method
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<div class="markdown level0 conceptual"></div>



<a id="FarPoint_Win_Spread_FpSpread_AddCustomFunction_" data-uid="FarPoint.Win.Spread.FpSpread.AddCustomFunction*"></a>
<h4 id="FarPoint_Win_Spread_FpSpread_AddCustomFunction_GrapeCity_CalcEngine_Function_" data-uid="FarPoint.Win.Spread.FpSpread.AddCustomFunction(GrapeCity.CalcEngine.Function)">AddCustomFunction(Function)</h4>
<div class="markdown level1 summary"><p>Adds a user-defined custom function (GrapeCity.CalcEngine.Function object) to the model for use in formulas.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public void AddCustomFunction(Function function)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Sub AddCustomFunction([function] As [Function])</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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    <tr>
      <td><a class="xref" href="../GrapeCity.CalcEngine/GrapeCity.CalcEngine.Function.html">Function</a></td>
      <td><span class="parametername">function</span></td>
      <td><p>The <a class="xref" href="../GrapeCity.CalcEngine/GrapeCity.CalcEngine.Function.html">Function</a> object of the custom function to add.</p>
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    </tr>
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