Hello philjun,

<field name="limit">200</field>

in your action (XML file).

Try Following,

for example,

<record id="action_your_object_form" model="ir.actions.act_window">

<field name="name">Your Object Name</field>

<field name="type">ir.actions.act_window</field>

<field name="res_model">your.object</field>

<field name="view_type">form</field>

<field name="limit">200</field>

<field name="view_mode">tree,form</field>

</record>

Hope this work for you.

if you find this answer helpful, please give me a thumbs up vote    

Regards,

Ankit H Gandhi