Why conditional formatting UI is blank

Hi, Fanco 

Regarding the issue you raised, my solution is as follows:

1.Firstly, for the JSON part, you can refer to my code below. This code was obtained through third-party software, and I hope it will be helpful to you:

"objects": {
      "values": [
        {
          "properties": {
            "backColor": {
              "solid": {
                "color": {
                  "expr": {
                    "FillRule": {
                      "Input": {
                        "SelectRef": {
                          "ExpressionName": "Sum(Table.Column2)"
                        }
                      },
                      "FillRule": {
                        "linearGradient2": {
                          "min": {
                            "color": {
                              "Literal": {
                                "Value": "'minColor'"
                              }
                            }
                          },
                          "max": {
                            "color": {
                              "Literal": {
                                "Value": "'maxColor'"
                              }
                            }
                          },
                          "nullColoringStrategy": {
                            "strategy": {
                              "Literal": {
                                "Value": "'asZero'"
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }

For detailed information, please refer to the following blog and official documentation:

Power BI Reporting Best Practices Analyzer - Microsoft Fabric Community

https://learn.microsoft.com/en-us/power-bi/developer/visuals/objects-properties?tabs=getFormattingModel#gradient-property

2.Secondly, for the settings part, you can refer to forum questions similar to yours. Below are screenshots of the relevant content:

For detailed information, please refer to the following links:

Solved: Re: Custom Visual - TextInput in Visual Format Set... - Microsoft Fabric Community

Of course, if you have any new ideas, you are welcome to contact us.
 

Best Regards,

Leroy Lu

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