storedprocedure in mvc razor using model and mysql

Hi

i wanto use storedprocedure using mysql in mvc razor 4

I created  databaseentity 

var vale=new Dbentity();

I created storedprocedure   i.e. getvalue

and want value from  storedprocedure() into string

In  storedprocedure , i have query as 

select firstval from firsttb where fcode='2'

i want firstval value 

i tried

string valhere=  vale.getvalue(2);

but it says cannot convert string to int