Micro Focus Visual COBOL 2.3 for Eclipse (UNIX) > Programming > Data Access > Data Files > Configurable Codesets > To customize character set conversion

To customize character set conversion

Note:

When creating a customized character set conversion, the resulting program will not be thread safe. This will cause problems in the Communications Process (MFCS) resulting in memory corruption.

To prevent this, insert a local-storage section declaration immediately after the working-storage section in the $COBDIR\src\codeset\csnnnn.cbl file, where nnnn is the 4-digit country code.

Click .
Create a new folder to hold temporary files and make it the current folder. For example:
```
md mylang
 cd mylang
```
At the command prompt, enter:
```
set mfcodeset=nnnn
```
where nnnn is the supported 4-digit country code whose character set conversion tables are most similar to the customized versions you want to create.
Enter:
```
codecomp /p mapfile.a2e mapfile.e2a
```
The files mapfile.a2e and mapfile.e2a are created in the current folder.
Edit the conversion tables in the mapfiles to suit your requirements. Mapfile.a2e contains the ANSI to EBCDIC conversion table; mapfile.e2a contains the corresponding EBCDIC to ANSI conversion table.
Enter:
```
codecomp mapfile.a2e mapfile.e2a
```
A file codeset.cpy is created in the current folder.
Enter:
```
copy $COBDIR\src\codeset\csnnnn.cbl csnnnn.cbl
```
where $COBDIR is your installation directory and nnnn is a number between 2000 through 9999 (excluding 9122) that you use to refer to your customized codeset module.
Enter:
```
copy csnnnn.gnt $COBDIR\src\codeset\
```
where $COBDIR is your installation directory and nnnn is the customized codeset number.