# A question about OSR command and policy frontier

**URL:** https://forum.dynare.org/t/a-question-about-osr-command-and-policy-frontier/5959
**Category:** Optimal Policy
**Created:** [2 January 2017 16:37 UTC](https://forum.dynare.org/t/a-question-about-osr-command-and-policy-frontier/5959 "2017-01-02T16:37:50Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)
#### Post date: [8 January 2017 19:08 UTC](https://forum.dynare.org/t/a-question-about-osr-command-and-policy-frontier/5959/3 "2017-01-08T19:08:21Z")

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That is not easy to impose. Dynare allows you to impose bounds on the parameters, not on the endogenous objects. In the exampe posted at [[Policy frontier](http://forum.dynare.org/t/policy-frontier/5910/1)) you would probably need to check whether

```auto
var_y(grid_iter)
```

is above a particular value and then set the output to NaN.

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