Thanks for your reply,

I give you the upper and lower case letters in Turkish below:

I(upper)-ı(lower case note that there is no dot on the lower i may be you may nt see it)I mean there are 2 i in Turkish(ı and i are 2 diferent characters)

I mean the controoler does not look at the standart English when converting tags into lower case.

There is no mif you write the tags lower case  like in your example.Some of our customers use upper caed tags like <IM.

the problem is that the controller converts it into <ım (note that there is no dot on topf of i in Turkish) The correct conversion must be <im  in English like in your example