Error converting data type varchar to int. Line 0. Why is the procedure not processed?

Question

MySQL

Hello. Just started learning the basics of SQL. There was a question with transfer of values ​​in procedure. Thanks in advance. Throws an error Error converting data type varchar to int. Line 0. Why is the procedure not processed? The procedure has already been created, so the problem is not in the alter.

Alter PROC  inf 
@nazvafacultetu varchar(50),
@grnum int,
@stn varchar(50),
@stln varchar(50),
@brth date,
@sumst int,
@yz date,
@stid int,
@sttid int,
@obychid int
AS
BEGIN
DECLARE @havemista INT;
DECLARE @nazvaf nvarchar(50);
DECLARE @chuslom INT;

select   @nazvaf=nazva, @chuslom=Chuslo_mest, @havemista = Count(St_lname)
From Obych
   INNER JOIN Facultet on (Facultet.FacultetID= Obych.FacultetID)
   INNER JOIN student ON (Obych.StudentID=student.StudentID) 
   where @[email protected]
   Group by Chuslo_mest, nazva
if @havemista<@chuslom
BEGIN 
INSERT INTO Student values
(@stln, @stn,@brth)
INSERT INTO Obych values
( @grnum, @sumst,@yz,@stid,@nazvaf,@sttid)
END
else print 'Нету мест'+cast( @chuslom as varchar(2))
END

---

EXEC inf @nazvafacultetu='historical', @grnum=1,@stn='Anna', @stln='Maria', @brth='1998-12-08',  @sumst=1200, @yz='2011-09-16', @stid=26, @sttid='woman' ;

Answer 1

The error is trying to tell you that it cannot convert varchar to int, look at where your text suddenly becomes numbers.
At the beginning you are asserting that @sttid is int and at the end you are trying to @sttid='woman'. Seems a bit illogical to me