Function Parameter Class

[ndeacon]

Hi,

I'm trying to understand the Function Parameter Class.

Please can you help me understand what is happening in this piece of code:

var fp2 = new FunctionParameter("nStopAmt", FunctionParameter.NUMBER);
fp2.setName("Stop Target Amount");
fp2.setLowerLimit(0.01);
fp2.setDefault(0.25);
}

In the body of the program, when a trade is opened, a stop level is set as follows:

if (nNewTrade == 1) { //Execute New Trade
// new or reversed trade position
if (Strategy.isInTrade() == true) {
if ((nsignal > 0) && (Strategy.isShort() == true)) {
Strategy.doCover("Exit Short", Strategy.MARKET, Strategy.NEXTBAR);
Strategy.doLong("Rev Long", Strategy.MARKET, Strategy.NEXTBAR);
nStopLevel = low(-1) - nStopAmt;
}
if ((nsignal < 0) && (Strategy.isLong() == true)) {
Strategy.doSell("Exit Long", Strategy.MARKET, Strategy.NEXTBAR);
Strategy.doShort("Rev Short", Strategy.MARKET, Strategy.NEXTBAR);
nStopLevel = high(-1) + nStopAmt;
}
} else {
if ((nsignal > 0)) {
Strategy.doLong("Go Long", Strategy.MARKET, Strategy.NEXTBAR);
nStopLevel = low(-1) - nStopAmt;
}
if ((nsignal < 0)) {
Strategy.doShort("Go Short", Strategy.MARKET, Strategy.NEXTBAR);
nStopLevel = high(-1) + nStopAmt;
}
} // end if IN TRADE
} // END EXECUTE NEW TRADE

My question is, what is the value afforded to nStopAmt by the code. I don't understand the

fp2.setLowerLimit(0.01);
fp2.setDefault(0.25);

part of the Function Parameter Class.

Thanks in advance for your help.

Neil.

[ACM]

Neil
The value will be whatever you will type in the Stop Target Amount box in Edit Studies.
fp2.setLowerLimit(0.01); is the lowest value you will be able to use as a variable.
fp2.setDefault(0.25); is the default value assigned to that variable.
You can find more information on Function Parameter Class in this article in the EFS KnowledgeBase
Alex

[ndeacon]

Great - thanks Alex.

Neil