I want to add data labels to the tops of bar charts in plotly express. I'm using two different columns from the data frame so I can't use the "colors" method. I want to define "text" for each bar so it shows the data on top of the bar. Here is an MRE.

```
import pandas as pd
import plotly.express as px

x = ['Aaron', 'Bob', 'Chris']
y1 = [5, 10, 6]
y2 = [8, 16, 12]

fig = px.bar(x=x, y=[y1,y2],barmode='group')
fig.show()

```

I tried:

```
fig = px.bar(x=x, y=[y1,y2],text=[y1,y2], barmode='group')

```

But this doesn't work.