Error Converting nvarchar to int

Question

Am trying to add the table column value into another table ,the column data type is varchar(.i.e QQ20150001),but while adding into another table am getting the error like "Error Converting nvarchar to int" 

 

my code is:

 

page.DAL 

public void SaveData(string JobTitle, string RequiredExp,string JobLocation,int RegistrationId,string RequirementId)

{

SqlConnection con = dbcon.OpenCoonection( );

SqlCommand cmd = new SqlCommand("USP_InsertSavedJobs", con);

cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.Add("@JobTitle", JobTitle);

cmd.Parameters.Add("@RequiredExp", RequiredExp);

cmd.Parameters.Add("@JobLocation", JobLocation);

cmd.Parameters.AddWithValue("@RegId", RegistrationId);

cmd.Parameters.Add("@RequirementId", RequirementId);// Am getting the this value from other table by using session 

cmd.ExecuteNonQuery();

dbcon.CloseConnection();

}

 

Can any one tell me what's going wrong?