i reproduce your "desirata" in the code below.
when browsing the globalinx cursor you can see the first field (addfield) is accentued and the converted field (unaccentued).
the conversion is made by a cursor scan
in the first field you can put your "Paris la défense" or any accentued string.

create cursor globalinx (addfield  c(150),unaccentued c(150))
insert into globalinx values("Tellus donec pulvîar fancibüs à classé pésuéré arcu mattis, aliquét alèquam habitant juséo convallis tùrpus néc,","")
insert into globalinx values("adipiscing enim !","")
insert into globalinx values("énis nostra fuscé. Fringlilia vestibulum sed famès nostré morbi mattis ut, cubliâ classé curae metus conubia","") 
insert into globalinx values("cél litoré, primis donéc dictum aliquet pulvîar et orci interdum.","")
SELECT globalinx
SCAN
repl unaccentued with CHRTRAN(addfield, "ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðñòóôõöùúûüýÿ","AAAAAACEEEEIIIIDNOOOOOUUUUYaaaaaaceeeeiiiidnooooouuuuyy")
endscan
brow