Pls help...How to pass a executed value to a variable?

Question

hi everyone im new here..
ok im having prob in passing the executed value of a string into a variable for me to manupulate the value. sample codes as below :
declare @Str varchar(500)
declare @Str1 varchar(50)
declare @Int varchar(50)
declare @Str2 varchar(50)
set @Str1 = 'where ET.isVerified = 1'
set @Str = 'select sum(ET.Sundries+ET.Entertainment+ET.BalReimbursement+ET.Fee+ET.TrainerCharges+ET.SeminarPack+ET.Food+ET.Accomodation+ET.Flight) from ExpensesTransactions ET ' + @Str1
EXEC(@Str)
Answer : 16935.00
so now i want to pass the output(Answer) into a variable so that i can insert the value into a table. anyone can help me in this thing . thank you so much..
regards
-nash-

Answer 1

hi Jurek
thanx for ur help dude, i change as what u said but i got this error msg "Incorrect syntax near '@Answer'"
declare @Str varchar(500)
declare @Str1 varchar(50)
declare @Int varchar(50)
declare @Str2 varchar(50)
declare @Answer varchar(50)
set @Str1 = 'where ET.isVerified = 1'
set @Str = ' BEGIN select sum(....) INTO @Answer From ExpensesTransactions ET ' + @Str1 + ' END;'
EXEC(@Str)
print @Answer
but then i change the script abit to 'Begin select....' + @Answer + ' From ..' + @Str1 + 'END;'...this time i got no error msg but there is no value in variable @Answer...
thanx everyone
- nash -