>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
>

I cannot understand the code perhaps I am confusing you - I have given the name town to of one of the fields which has accents

Does this make any difference to your code?