Data in a Dashboard Graph Aggregated by Year and Month (in correct correct order)

Hi, I am really struggling with this. Like everyone, I have used Excel for years to report on data and it easily recognizes data that is categorized by year and month and displays it on a graph for trend analysis.
I have used the MONTH and YEAR functions to extract the right values and used a summary report to gather the data together. The report shows month and year as shown below:
However, when I graph the data it only shows year! Surely this is a fundamental feature.
Answers
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Graphing from a grouped report will only pull from the first level of grouping. To get more layers, you will need to use a separate sheet with formulas containing cross sheet references.
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Is it possible to get an example of that please?
It seems extremely convoluted for something that should be fundamental to the way Smartsheet is used.
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Interesting observation