Alphanumeric values on x axis in xy report chart

basically i am getting the data from database and created named named query.

and created the datasource in report and connect with named query.

i want to plot the sample name on x axis and values on y axis.
i tried :
and in axes configuration i changed type with symbol.but its not working.

please guide me

i am getting data like this but its not shows properly, i want 3 samples name as above mentioned in x axis and values in y axis.