Executing a stored procedure inside another stored procedure - sql-server-2008

Question

I am working with a bank database with two tables i.e [Card] and [Transaction].
I have created a stored procedure login that gets as inputs pin and cardNumber and returns the validity of card in an output parameter. Now, I have created another stored procedure withdraw that gets inputs pin, cardNum, transactionAmount and starts a transaction. I am trying to use p1 procedure to handle the validity part. Here are the 2 procedures
create procedure login
#status int output,
#pin varchar(4),
#cnum varchar(20)
as
begin
if exists (select * from [Card] where PIN = #pin AND cardNum = #cnum)
begin
set #status = 1
end
else
begin
set #status = 0
end
end
alter procedure WithDraw
#pin varchar(4),
#cnum varchar(20),
#trAmount int
as
begin
declare #m int
exec login #pin = N'0234', #cnum = N'2324325423336', #status = #m OUTPUT
if (select #m) = 1
--if exists (select * from [Card] where cardNum = #cnum AND pin = #pin)
--working fine with above statement
begin
if exists (select * from [Card]
where cardNum = #cnum AND pin = #pin AND (balance > #trAmount))
begin
update [Card]
set balance = balance - #trAmount
where cardNum = #cnum AND pin = #pin
declare #maxID int
select #maxID = MAX(transId) from [Transaction]
insert into [Transaction]
values (#maxID + 1, GETDATE(), #cnum, #trAmount, 1)
print 'Transaction successful'
end
else
begin
select #maxID = MAX(transId) from [Transaction]
insert into [Transaction]
values(#maxID + 1, GETDATE(), #cnum, #trAmount, 4)
print 'Transaction unsuccessful! Insufficient balance in card'
end
end
else
begin
print 'login failed'
end
end
exec WithDraw #pin = N'1770', #cnum = N'1324327436569', #trAmount = 50000
However, when I execute withdraw with login procedure inside, login always fails. When i execute without login procedure everything works fine. Any help will be greatly appreciated.