Temporary tables in a WHILE LOOP - sql-server

Question

I have a question concerning a dynamic creation of temporary tables.
I need a while loop in which temporary tables are created in every cycle differing in their name using the variable #i. So I specified the variables #CreateTableVerbGES and #ShowTableVerbGES with the code as strings and want to execute them in the loop.
Here is my code:
DECLARE #i int = 1
DECLARE #CreateTableVerbGES nvarchar(max)
DECLARE #ShowTableVerbGES nvarchar (max)
WHILE #i<4
BEGIN
SET #CreateTableVerbGES = 'CREATE TABLE #UnterBaugruppe'+CAST((#i) as nvarchar(max))+' ([IDTBG] [int] identity(1,1),[IDGES] [int] NULL,[Baugruppe1] [nvarchar](max) NULL,[IDBG1] [int] NULL,[Bauteil1] [int] NULL,[Baugruppe2] [nvarchar](max) NULL,[IDBG2] [int] NULL,[Bauteil2] [int] NULL,[Baugruppe3] [nvarchar](max) NULL,[IDBG3] [int] NULL,[Bauteil3] [int] NULL)'
SET #ShowTableVerbGES = 'SELECT * FROM #UnterBaugruppe'+CAST((#i) as nvarchar(max))
EXEC (#CreateTableVerbGES)
EXEC (#ShowTableVerbGES)
SET #i += 1
END
The problem is that it seems like the first cycle of the loop is running, because the first table #UnterBaugruppe1 is shown. But for the next two cycles there is a warning that the tables #UnterBaugruppe2 and #UnterBaugruppe3 are invalid and don't exist.
Does anybody have an idea why it isn't working?
I really need the tables in a loop because I want to insert different information in the loop as well dependent on #i.

Answer 1

I just concatenated the dynamic sql of two variable into single using new line character and executed and it perfectly worked for me!
DECLARE #i int = 1
DECLARE #CreateTableVerbGES nvarchar(max)
DECLARE #ShowTableVerbGES nvarchar (max)
WHILE #i<4
BEGIN
SET #CreateTableVerbGES = 'CREATE TABLE #UnterBaugruppe'+CAST((#i) as nvarchar(max))+' ([IDTBG] [int] identity(1,1),[IDGES] [int] NULL,[Baugruppe1] [nvarchar](max) NULL,[IDBG1] [int] NULL,[Bauteil1] [int] NULL,[Baugruppe2] [nvarchar](max) NULL,[IDBG2] [int] NULL,[Bauteil2] [int] NULL,[Baugruppe3] [nvarchar](max) NULL,[IDBG3] [int] NULL,[Bauteil3] [int] NULL)'
+ CHar(10) + Char(13) + 'SELECT * FROM #UnterBaugruppe'+CAST((#i) as nvarchar(max)) + CHar(10) + Char(13)
Print #CreateTableVerbGES
EXEC (#CreateTableVerbGES)
--EXEC (#ShowTableVerbGES)
SET #i += 1
END