Trouble with Spanish characters

Hi,

We are integrating with an asterisk implementation and we are having trouble with some variables that include some Spanish characters like ñ,á,é,í,ó,ú . In the dialplan.rb the variable seems to get the value correctly, but then when we try to work with it, or debug it, we find that the value has changed to nil.

Here is the code:

comentarios = get_variable("COMENTARIOS")
ahn_log.debug comentarios

Debug result:

DEBUG agi: >>> GET VARIABLE "COMENTARIOS"
DEBUG agi: <<< 200 result=1 ( LOC Cobeña )

DEBUG ahn: NilClass: nil

We are just beggining with adhearsion, maybe it is a setup error, but it is really weird, because other variables can work correctly with Spanish characters.

Thanks in advance.