def __value_match(self, t1, t2, threshold=0):
"""
Compares two financial values (incl. currencies).
If one is equal or, if there is a threshold set, in
allowed margin, returns True.
:param t1: record from file containing ["fin_value"] and ["currency"] fields
:param t2: record from file containing ["fin_value"] and ["currency"] fields
:param threshold: allowed tolerance, e.g., 0.2 = 20%
:return: are financial values equal?
"""
v1 = float(t1.get("fin_value"))
v2 = float(t2.get("fin_value"))
c1 = t1.get("currency")
c2 = t2.get("currency")
return ExtractionUtils.money_equals(v1, c1, v2, c2, EVAL_MONEY_TOLERANCE_PERCENT)
