Converting hex to decimal

[dick]

the whole datarange is
20;0A;Cresta;ID=2C01;TEMP=00e8;HUM=63;BAT=OK;
with change is it reformed to:
20;05;Cresta;ID;2C01;TEMP;00f2;HUM;65;BAT;OK;
with function data split i got the information needed
temp: "00f3" hum: "65"

and then ?? Ho do i get decimal data from (wx)sensors
it is no working.
Dick