Indexing to Lis of text String

Can you share your code? I am sure I understand what you do and what your goal is.

Hi Stefan,
Here is my code.

a!localVariables(
  local!exceldata: readexcelsheet(
    excelDocument: cons!IT_SAMPLE_FILE,
    sheetNumber: 0,
    startRow: 0,
    /*stopReadingAtFirstBlankRow: false(),*/
    /*pagingInfo: a!pagingInfo(startIndex: 1, batchSize: 0)*/
    
  ),
  local!datalength: length(
    index(local!exceldata, "result", "values", {})
  ),
  local!headers: index(local!exceldata, "result", "values", 1, {}),
  local!filecdt: a!forEach(
    items: local!headers[1],
    expression: {
      fv!item & " : " & a!forEach(
        items: 2,
        /*enumerate(local!datalength - 1) + 2,*/
        expression: a!forEach(
          items: index(
            local!exceldata,
            "result",
            "values",
            fv!item,
            {}
          ),
          expression: a!forEach(
            items: fv!item,
            expression: a!forEach(
              items: fv!item,
              expression: fv!item
            )
          )
        )
      )
    }
  ),
  local!filecdt
)

This is confusing. Why do you use more than three parameters with the index function? The behaviour with more than three parameters is undefined.

index(local!exceldata, "result", "values", 1, {}) is equivalent to
index(index(index(local!exceldata, "result",{}),"values",{}),1,{})

Sorry, but again, while this behaviour works most of the times, it is no documented and has edge cases in which it does not work and is super difficult to debug.

Could you please help me in with the issue I am facing ?
"I am trying to use indexing for type " List of Text String " but the output i am getting not the expected output"

What is the input and what output you are expecting?

The input is like : "How","Are","You" (which is of type list of  text strings),
I am trying to get only 1 at a time using indexing (either "How" or "Are" or "You"), But I am getting the "H","A","R" if i am using index 1

a!localVariables(
local!text:{"How","Are","You"},
index(local!text,2,{})
) 

It will work?

IN the code you provided, you are using some excel file. What you want to get from that and what is there in that file.

I am trying to create a dynamic excel reader and use the data in a grid.

I am trying to create a dynamic excel reader and use the data in a grid.

Oh you want to create a grid based on dynamic Excel. Let me write the code and will let you know ASAP.

a!localVariables(
  local!excelData: index(readexcelimportfile(
    excelDocument: todocument(57745), /*put excel document id instead of 57745*/
    sheetNumber:0,
    startRow:0
  ),"result",{}),
  a!gridField(
    data: remove(local!excelData,1),
    columns: {
      a!forEach(
        items: local!excelData[1].values,
        expression: a!gridColumn(
          label: fv!item,
          value: index(fv!row.values,fv!index,{})
        )
      )
    }
  )
)

Please refer this code and see if it works.

a!localVariables(
  local!exceldata,
  a!sectionLayout(
    contents: {
      a!fileUploadField(
        label: "Upload a File :",
        target: cons!IT_FOLDER,
        fileNames: "File Reading-File Uploaded on " & text(now(), "ddmmyyhhmmss"),
        fileDescriptions: "File Reading Interface Testing on File Uploaded on " & text(now(), "ddmmyyhhmmss"),
        maxSelections: 1,
        value: ri!uploadedFile,
        saveInto: {
          ri!uploadedFile,
          a!save(
            local!exceldata,
            index(
              readexcelsheet(
                excelDocument:todocument(ri!uploadedFile),
                sheetNumber:0,
                startRow: 0
              ),
              "result",
              {}
            )
          )
        },
        required: true(),
        validations: if(
          contains({ "csv", "xlsx" }, fv!files.extension),
          {},
          "Only CSV,XLSX formats files should be uploaded but uploaded file is of format ." & fv!files.extension
        )
      ),
      a!gridField(
      label: "Excel Data :",
      emptyGridMessage: "Please Upload a File with Values",
      data: remove(local!exceldata, 1),
      columns: a!forEach(
      items: local!excelData[1].values,
      expression: a!gridColumn(label: fv!item, value: index(fv!row,fv!index,{}))
      ),
      showWhen: not(a!isNullOrEmpty(ri!uploadedFile))
      )
      
    }
  )
)

It is returning blank because the file is not in Appian System. you are just uploading it and the uploaded file will be in Appian system once you click on submit button. Make Sure, the interface where you are uploading the file is either a start form of the process model or a user input task.

Just to check the code, you can manually upload the excel into Appian and copy the id of that document and put it into excelDocument configuration of the ReadExcelSheet function.

Thank you will check that

a!localVariables(
  local!uploadedFile,
  local!exceldata,
  a!sectionLayout(
    contents: {
      a!textField(
        value:local!uploadedFile,
        saveInto: {
          local!uploadedFile,
          a!save(
            local!exceldata,
            index(
              readexcelsheet(
                excelDocument:todocument(57745), /*57745 is the document id. Please replace it with yours*/
                sheetNumber:0,
                startRow: 0
              ),
              "result",
              {}
            )
          )
        }
      ),
      a!gridField(
        label: "Excel Data :",
        emptyGridMessage: "Please Upload a File with Values",
        data: remove(local!exceldata, 1),
        columns: a!forEach(
          items: local!excelData[1].values,
            expression: a!gridColumn(label: fv!item, value: index(fv!row.values,fv!index,{}))
        ),
        showWhen: not(a!isNullOrEmpty(local!uploadedFile))
      )

    }
  )
)

Please refer the above code