i need some help

<p class="MsoNormal" dir="ltr" style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; unicode-bidi: embed; TEXT-ALIGN: left"><span
style="FONT-SIZE:10pt; FONT-FAMILY: Arial">Hey,</span><p class="MsoNormal" dir="ltr" style="MARGIN: 0cm 0cm 0pt;
DIRECTION:ltr; unicode-bidi: embed; TEXT-ALIGN: left"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am really new
topostgres, and I am trying to make functions, but I can't find a way to update and test my function, I know it seems a
bitsilly, but it's really giving me some hard time, </span><p class="MsoNormal" dir="ltr" style="MARGIN: 0cm 0cm 0pt;
DIRECTION:ltr; unicode-bidi: embed; TEXT-ALIGN: left"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span><p
class="MsoNormal"dir="ltr" style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; unicode-bidi: embed; TEXT-ALIGN: left"><span
style="FONT-SIZE:10pt; FONT-FAMILY: Arial">Thank you,</span><p class="MsoNormal" dir="ltr" style="MARGIN: 0cm 0cm 0pt;
DIRECTION:ltr; unicode-bidi: embed; TEXT-ALIGN: left"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Tala
Halaseh</span><spanstyle="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-language: AR-JO"> </span>