autonaming rule

hi all

i got a problem to define an autonaming rule :

rule = !!ce.:LI_fluide & '-' & !!ce.:li_numero & '-' & !!ce.:li_dn & '-' & !!ce.:li_classe & '-' & !!ce.:li_calo

pb with uda :li_dn witch is an integer --> the rule return for my :li_dn :ARRAY instead of 50

any idea ?

i try : !!ce.(string(:li_dn)) but it does'nt works

thanks for helping

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so ...

i got it with sysntax : !!ce:li_dn[1] witch return 50