2 staff tremolo for piano

[m.ralston77]

does anyone know how to make this on dorico?
i have had zero success. unmeasured tremolo between 2 staffs and two hands

[Craig_F]

Create both chords on the top staff as half notes.
Select both chords and type Shift-R to get repeats popover. Type 42 into popover.
Select the first chord and type the letter m. Do not type Shift-M, just m.

[m.ralston77]

Thanks . Is anything supposed to happen after 42 entered into repeats popover?
I follow your directions exactly I get the chords beamed together and no tremolo sign
Ugh ! But thanks . Maybe my software or brain are corrupted

[StevenJones01]

That’s strange.
I followed the instructions exactly and got this:

[Craig_F]

To make sure you’re starting off correctly. Step 1 should look like this.