i use Stored procedure to send sms arabic it send as ???????

Question

i use Stored procedure to send sms

 

when sms message english it send prefectly

 

but when i change message to arabic it send as question mark ???????/

 

create procedure [dbo].[pr_SendSmsSQL] @MobileNo varchar(12), @smstext as varchar(300), @sResponse varchar(1000) OUT as BEGIN Declare @iReq int,@hr int Declare @sUrl as varchar(500) DECLARE @errorSource VARCHAR(8000) DECLARE @errorDescription VARCHAR(8000) -- Create Object for XMLHTTP EXEC @hr = sp_OACreate 'Microsoft.XMLHTTP', @iReq OUT print @hr if @hr <> 0 Raiserror('sp_OACreate Microsoft.XMLHTTP FAILED!', 16, 1) set @sUrl='http://api.clickatell.com/http/sendmsg?user=devendar&password=csx19csx&api_id=3360313&to=#MobNo#&text=#Msg#' set @sUrl=REPLACE(@sUrl,'#MobNo#',@MobileNo) set @sUrl=REPLACE(@sUrl,'#Msg#',@smstext) print @sUrl -- sms code start EXEC @hr = sp_OAMethod @iReq, 'Open', NULL, 'GET', @sUrl, true print @hr if @hr <> 0 Raiserror('sp_OAMethod Open FAILED!', 16, 1) EXEC @hr = sp_OAMethod @iReq, 'send' select @iReq print @hr if @hr <> 0 Begin EXEC sp_OAGetErrorInfo @iReq, @errorSource OUTPUT, @errorDescription OUTPUT SELECT [Error Source] = @errorSource, [Description] = @errorDescription Raiserror('sp_OAMethod Send FAILED!', 16, 1) end else Begin EXEC @hr = sp_OAGetProperty @iReq,'responseText', @sResponse OUT print @hr insert into send_log (Id, mobile, sendtext, response, created, createddate) values(0, @MobileNo, @smstext, @sResponse, 'System', GETDATE()) end end