Thre're multiple ways to do that

lcName = "Moises Francisco Pereira"

? GETWORDNUM(lcName,1)
* or
? STREXTRACT(lcName,"", SPACE(1))
* or
? ALINES(laList, lcName,1+4,SPACE(1))
? laList[1]

>
>The function you showed seems complex because has title as mr. mrs, dr, etc
>
>I just want something more simple
>
>I am considering using length function
>
>Do you know how to locate the first space after the first name, so I can use lengt() to delimit the first name ?