Usage of this bridge

[williamwongys]

Essential information for reporting Issues:

• What version of Windows, and 32/64 bit:32
• What Build number of Metatrader:4.0 Build 1010 (18 Aug 2016)
• Where was the Metatrader installed from:
• What version of Python: 2.7
• Where was the Python installed from:
• OTMql4Py from git, or what version of the OTMql4Py installer:current

I was looking to call Python from MT4, MT4 will pass a few arrays of doubles to Python which will use the arrays to calculate and return a double back to MT4. MT4 will then draw an indicator using the return value.
Can this be done? Is there an example to start with? I installed and tried with a simple script in MT4, it hanged MT4 with access violation:

#include <OTMql4/OTPy27.mqh>

int OnStart(){
uchar expr[];
StringToCharArray("a=""a string""",expr);
PyInitialize();
int s=PyEvaluate(expr);
StringToCharArray("a",expr);
s=PyEvaluate(expr);
s=PyGetString(s);
printf("%s",s);

return(0);

}