# 2984 Compiling an EDB Application with Range Checking Can Cause Range Check Errors at Runtime

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Just installed ElevateDB 2.02 build 11. Compiled my program with "Range checking" option selected and when I run it got "Range check error". Error occures in method TEDBBitmap.SetBit in edbcommon unit. This method is called by:

EDBCharSet.AddCharRange(#0,#47);.

For the first character (Value = #0) line

J:=((Value-1) mod BITS_PER_WORD);

causes exception. When "Range checking" is disabled this method will override memory.