Fwd: issue in using validation service

Hey Team,

For validation using service the required response is:

e.q:
https://jigsaw.w3.org/css-validator/validator?uri=http%
3A%2F%2Fwww.xyz.org%2F&profile=css21

It is working fine, however in documentation it is mentioned that i can use
below parameters:

ParameterDescriptionDefault value
uri The URL of the document to validate. CSS and HTML documents are
allowed. None,
but either this parameter, or textmust be given.
text The document to validate, only CSS is allowed. None, but either this
parameter, or uri
But when i am using text instead of paaremeter i am getting error.. Can you
please help me.. :(