testing of custom indi based on ENUM values - is it possible?

I want to test an indi based on ENUM values. Will an iCustom indi test allow testing of values such as...

extern int indiPeriod=14;
input ENUM_APPLIED_PRICE PriceType = PRICE_CLOSE;
input ENUM_RANGEMODE RangeType = HIGH_LOW;
input ENUM_TIMEFRAMES TimeFrame = 0;

AND....Are there integer alternatives available for the ENUM values (in bold font above)? I didn't see any mention in the MT4 docs.

I suppose the standard answers would be:
1. Try it and test it yourself to see if it works.
2. Convert the ENUM input variables into extern variables and convert the ENUM types into integer values.

I just wanted to see if anyone has tested an iCustom indi using ENUM values.

If this is possible, that would be nice to have that kind of feature or function to an indicator.