# Goal Seek Goal Seek feature is applicable when you want to update a node value that is derived using a complex formula, or has dependents/node references that use a complex formula. Such nodes can be updated only by changing one of its key drivers/input nodes. The **Goal Seek** button in the Action menu bar gets enabled automatically when you are trying to update a node that has a reference to a complex formula.

{% hint style="info" %} In the above image, clicking on the *Clothing* node has enabled **Goal Seek,** despite its formula being ***Sum of Visible Children*** because one or more of its child nodes contain complex formulas(e.g. division, sum of products, etc.). {% endhint %} {% hint style="info" %} This option is presented to the user automatically, in cases when you are forecasting for the nodes that involve complex formulas. In the below image, forecasting is done for the *Total Net Profit* node. Since it involves a complex formula, the user is prompted with the below pop-up window to choose the input node/changing node through goal seek. {% endhint %}

Forecasting is explained in the section: [Time Series Forecasting.](/plan/time-series-forecasting.md) ## Steps for Goal Seek **Step 1:** Select the node you want to change and click **Goal Seek** from the Action Menu Bar. A pop-up window opens below the screen. *Revenue* node of January is selected in the example below and **Goal Seek** is chosen.

**Step 2:** By default, **Goal Value, Target Node,** and **Period** fields are pre-filled based on the node selected. The user can change these values if required.

**Step 3:** Enter the target value to be achieved in **Goal Value.** Here the Goal Value is set as 50000.

**Note:** By clicking on the **Target Node** text box, **'Select a node'** pop-up opens in which you can select a different input node other than what you had chosen previously (for example, in this case *Revenue* node can be changed to a different node) **Step 4:** From the **Period** dropdown list, choose *Total* if you want to change and distribute the total value. [**Distribute**](/plan/allocation-features/distribute.md) option is displayed if you select *Total*.

**Distribute the Total after changing the Input Node**

(or) choose *any month (Jan)* if you want to copy to the remaining periods. [**Copy to Periods**](/plan/allocation-features/copy-to-periods.md) option gets displayed if you choose a specific period.

**Copy to Periods after changing the Input Node**

**Step 5:** Select the **Input Variable** from the list that appears on clicking it, whose change will result in achieving the goal value. The input variable selected in the example below is *Units Sold* node. The changed value of January is copied in an increasing trend of 10% to the remaining periods.

**Copy to Periods after changing the Units Sold Node**

**Note:** To preview your change, click on **View Goal Values.**

**Step 6:** Click **Run** to see the results and then Click **Apply** or continue performing goal seek until you get the desired result.

Finally, the new series is created as shown below for the desired target node, by changing the input variable. All the changed cells are highlighted in yellow in the table grid.

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