Oh thank you so much! Obvious mistake haha

Hey all
I'm new to backtrader and I'm really excited about it! But I have a problem:

Im trying to work with my csv Data wich I have fetched from a crypto exchange. When I plot it evrything looks fine, but it executes no trades. I think the problem is somewhere in my Data.

The Candlesticks are daily.

So this is how I'm trying to set de data:

def data():
    data = btfeeds.GenericCSVData(
        dataname="data.csv",
        nullvalue=0.0,
        dtformat=('%Y-%m-%d'),
        tmformat=('%H:%M:%S'),
        timeframe = bt.TimeFrame.Days,
        compression=1,
        datetime=1,
        time = 12,
        open=2,
        high=3,
        low=4,
        close=5,
        volume=6,
        openinterest = -1)
    return data

and this is my strategy:

class firstStrategy(bt.Strategy):

def __init__(self):
    self.rsi = bt.indicators.RSI_SMA(self.data.close, period=21)

def next(self):
    if not self.position:
        if self.rsi < 30:
            self.buy(size=100)
    else:
        if self.rsi > 70:
            self.sell(size=100)

Has anyone an idea what I need to fix? Thank you so much in advance!