Help with What If Parameter as Forecasted Line Chart with Actuals

[powerbinovice01]

Thank you in advance. 

I am looking to create a linechart that will intersect where MaxDate(Calendar)-Actual Sales meet MaxDate and my Sales - What if and as diverging line for the years following that growth.
I would love to build upon if possible to include What if Sales Growth for Year, One, Two, Three at different varibles: 

Think for Year 2024 Sales went up at a 10% grow and then in Year 2026 decreased 3%. 

Is that something that is possible? 

For right now here is a visual of what I have created for reference. 

Monthly Sales Growth Rate Value is assotiated from the generated Parameter (the 4.2% in the call out valuse and slicer on left) : 

Monthly Sales Growth Rate = GENERATESERIES(0, 5, 0.1) 

Monthly Sales Growth Rate Value = SELECTEDVALUE('Monthly Sales Growth Rate'[Monthly Sales Growth Rate], 0.1)

Sales - What if = [Monthly Netchange]*'Monthly Sales Growth Rate'[Monthly Sales Growth Rate Value]

Sales and Forecast = image below:

What may I be doing wrong? 
What would the best place to adjust the measures provided, please see the attached idea I have in mind: 

Thank you for your time and consideration! 

[Anonymous]

Hi @powerbinovice01 

could you please provide more raw data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples? It would be helpful to find out the solution. You can refer the following links to share the required info:

How to Get Your Question Answered Quickly - Microsoft Fabric Community

How to provide sample data in the Power BI Forum - Microsoft Fabric Community

And It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

How to upload PBI in Community

Best Regards

Zhengdong Xu
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