Assert ( Any message, boolean condition, Any message);

Default values:

message: "assert failed" message: "assert failed"


Throws a runtime error message in case the specified condition is false. The error message can be viewed by clicking Exclamation indicator in the top left corner of the chart.

Input parameters

Parameter Default value Description
condition - Defines condition upon which the error message is displayed.
message "assert failed" Defines the text of error message.


input percent = 5.0;
Assert(percent > 0.0, "percent must be positive");
plot UpperBand = (1 + percent / 100 ) * close ;
plot LowerBand = (1 - percent / 100 ) * close ;

If "percent" input parameter is not a positive value, study plots are not displayed and Exclamation indicator appears.