Hi All , I used readexcelimportfile() function for reading the Excel , In excel in one field we provided $ symbol and its failed with error= ERROR:Work item cancelled (Data Outputs)

Hi All , I used readexcelimportfile() function for reading the Excel , In excel in one field we provided $ symbol and its failed with error= ERROR:Work item cancelled (Data Outputs).Is there any limitation with filed please provide you input.

a!localVariables(
local!read: readexcelimportfile(
excelDocument:pv!file,
sheetNumber:0,
startRow:1
).result,
a!forEach(
items: index(local!read,"values",null),
expression:'type!{urn:com:appian:types:PST}PST_ListBill_ExcelData'(
CaseId:pv!caseId,
NAME:index(fv!item,1,null()),
REFERENCE:index(fv!item,2,null()),
CONTRACT:index(fv!item,3,null()),
DATE:index(fv!item,4,null()),
)
)
)