gohan_sleep doesn't evaluate it's argument

[p-kozlowski]

Calling gohan_sleep(param) from a JS extension returns immediately (without an error and without sleeping) when param is a compound expression.

Examples:

gohan_sleep(2*1000); // expecting a sleep of 2 sec

var sleepTime = 1000;
gohan_sleep(2*sleepTime);

var sleepTime = 1000*2;
gohan_sleep(sleepTime);

Actual result:
In every example, the call returns immediately, no error is reported

Expected result:
Call will sleep for 2 seconds.

Works as expected:

gohan_sleep(2000);

var sleepTime = 2000;
gohan_sleep(sleepTime);