to whom it may be interested, I made it work properly, putting the attributes in Annotation Options this way:
PSPE, {[COLOR=#333333]DPREMIN [/COLOR]of SCPLIN},{[COLOR=#333333]DPREMAX [/COLOR]of SCPLIN},{[COLOR=#333333]DTMPMIN[/COLOR] of SCPLIN},{[COLOR=#333333]DTMPMAX[/COLOR] of SCPLIN}