Account Percent Risk Position Size Calculator

Possible to get some help on my Position Size Script getting an error at def currentPrice.  There may be more issues I’m not aware of I’m very green at this!  Code:

# Position Size Calculator based on max % account risk with variable position riskPercent %.
declare upper;

# Input max percentage of a portfolio that one stock should be
input Max_Percent = 0.50;
input price = close;

def netliq = GetNetLiq();

### Risk of Portfolio

def twoperc = netliq * (Max_Percent / 100);
AddLabel(yes, Max_Percent + “% Act Risk: ” + AsDollars(twoperc), Color.CYAN);

# Input position risk
input RiskPercent = .05 ;

# Position Size
def currentPrice = priceType.LAST;
def dollarRisk = (currentPrice * RiskPercent);
def stopPrice = (currentPrice – dollarRisk);
def SHAREStoBUY = twoperc / (currentPrice – stopPrice);

input showlabel = yes;
AddLabel (yes, ” POS ” + SHAREStoBUY, Color.CYAN);