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How to call a single bar of data?

How would i go about calling data from a single tradebar back?

The following line throws an error

slices = self.History(["EURUSD"], 1, Resolution.Daily)

u'the label [EURUSD] is not in the [index]

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Did you add EURUSD to your Securities in the Initialize() ? Best is to share your algo to see what your are doing.

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import numpy as np

class BasicTemplateAlgorithm(QCAlgorithm):
'''Basic template algorithm simply initializes the date range and cash'''

def Initialize(self):

self.current = None
self.SetStartDate(2015,10,07) #Set Start Date
self.SetEndDate(2016,10,11) #Set End Date
self.SetCash(100000) #Set Strategy Cash

self.AddForex("EURUSD", Resolution.Daily)
self.Debug("numpy test >>> print numpy.pi: " + str(np.pi))


def OnData(self, data):
'''OnData event is the primary entry point for your algorithm. Each new data point will be pumped in here.
'''

slices = self.History(["EURUSD"], 1, Resolution.Daily)

Just basic stuff

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