Testing inequality

I have the following code to test if a reading is within +/-25% of the expected value.



function testWithinLimits()

{

   var expectedVal = 200;

   var ErrorInPercent = 25;

   var UpperLimit = expectedVal/1000 * ((100 + ErrorInPercent)/100);

   var LowerLimit = expectedVal/1000 * ((100 - ErrorInPercent)/100);



   var readVal = "0.15";

   var reading = StrToFloat(readVal);

   bResult1 = (reading <= UpperLimit);

   bResult2 = (reading >= LowerLimit);



   strMsg = FloatToStr(reading) + " <= " + FloatToStr(UpperLimit) + " is : " + bResult1;

   strMsg += "\r\n";

   strMsg += FloatToStr(reading) + " >= " + FloatToStr(LowerLimit) + " is : " + bResult2;  

   

   ShowMessage(strMsg);



}



The expected value is 0.2 so a range from 0.15 to 0.25 (inclusive) is allowed. My reading is 0.15 but the function shows a false result.



Have I missed a type conversion or made a serious error?



I'm using TestComplete v6.52.419.7.



Thanks, Leon.