using data_validation for list with a value enclosed with " triggers Racc::ParseError

[vincentv-sp]

i'm trying to make a list data validation using this:

worksheet.data_validation(row, 0, row+50, 0,
{
:validate => 'list',
:source =>["a>b", "a<b", "a?b", "a*b", "?><", "'C", ""D""]
})

where one of the string is enclose with " and it gives me this error:

Racc::ParseError in MyController#write_to_excel
parse error on value "D" (error)