get timeInterval

[kpmci]

In following, psarx does not return the value of time interval 60 minutes instead returns the "Day" interval value. Why, any suggestions? Current psar1 value is just fine.

var psarx = sar(0.02,0.02,0.2,(inv(60))); var psarxx = sar(0.02,0.02,0.2,inv(60),-1);
var psarxx2 = sar(0.02,0.02,0.2,inv(60),-2);*/
var psar1 = sar(0.02,0.02,0.2,0);var psar11 = sar(0.02,0.02,0.2,-1);