2.3.4.5.1. 
 Key
      "CATPRODUCT_INSTANCENAME"
| ![[Important]](https://webapi.partcommunity.com/service/help/latest/pages/en/3dfindit/doc/images/important.png) | Important | 
|---|
| CATPRODUCT_INSTANCENAME must be unique in CATIA, otherwise problems arise if two files have the same PARTNUMBER in a CATIA session. Also: CATIA V5 is based on the ISO 646 standard, which does not support a multi-byte character code. Please use the repTable function to have valid CATIA attributes. | 
reptable simply replaces one character set with another.
Example:
CATPRODUCT_INSTANCENAME=?GetObject("iface.calcnameservice").start(0).Format("<ATTR(NB)>")
 .reptable("").value()
 .reptable("").value()
Possibly an
      expression like "Format(„<ATTR(NB,english)>“).toAlnum()" instead
      of "reptable" also makes sense.