# Showing a banner only when visitors land with our coupon link

Asked by Trish Delaney on 2024-11-06. Tags: shopify, liquid, cql, campaigns.

ok so our email links look like `oursite.com/?coupon-code=10off` and I want a
banner that only shows for people arriving through those links. I went into the
audience editor and tried writing the condition like this:

```cql
page's query's coupon-code is "10off"
```

and it just keeps erroring. I tried a few variations with quotes around
coupon-code too and no luck. what am I doing wrong here? I'm not a developer, I
just click around the dashboard until things work usually

## 1 answer

### Answer from ben_a83 (2024-11-06)

You are very close. The dash in `coupon-code` is the problem: the possessive
style (`page's query's something`) only works for plain parameter names.
A name with a dash needs bracket notation instead:

```cql
page.query['coupon-code'] is "10off"
```

That is the documented form for exactly this case. For comparison, a parameter
without dashes works fine the way you were writing it, e.g.:

```cql
page's query's newsletter is "daily-news"
```

So it is only the dashed name that forces the switch, and you can mix both
styles in one condition if you ever need to.

Once you save the audience, it evaluates in real time when someone lands with
that link, so the banner shows on the very first page. No code changes to the
store needed, this is all dashboard work.

#### Reply from Trish Delaney (2024-11-07)

the bracket thing worked!! tested it with the link from our last email and
the banner showed right away. thank you so much