Updating Survey list

Hi,

I am trying to update survey list in sharepoint 2010, i am able to update the all questions in the Survey list properly but problem occur when I we want to update the Multichoice question

follwing is the way I am passing my xml

<Method ID=""1"" Cmd=""New"">
<Field Name=""ID"">New</Field>
<Field Name=""Please_x0020_indicate_x0020_your"">Strongly Agree</Field>
<Field Name=""If_x0020_you_x0020_were_x0020_in"">Sample Accountability; LBX App</Field>
<Field Name=""I_x0020_love_x0020_surveys_x0021"">1</Field></Method>

the field name=If_x0020_you_x0020_were_x0020_in is multichoice question it only accept the Sample Accountability and ignores LBX App.

I am not sure is it a SharePoint issue or I have to pass some other way.

Please suggest.