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# TaoADMMSetRegHessianChangeStatus
Set boolean that determines whether Hessian matrix of regularization subsolver changes with respect to input vector. 
## Synopsis
```
#include "petsctao.h" 
PetscErrorCode TaoADMMSetRegHessianChangeStatus(Tao tao, PetscBool b)
```
Collective


## Input Parameters

- ***tao -*** the `Tao` solver context
- ***b -*** the Hessian matrix change status boolean, `PETSC_FALSE` when the Hessian matrix does not change, `PETSC_TRUE` otherwise.





## See Also
 `TAOADMM`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/impls/admm/admm.c.html#TaoADMMSetRegHessianChangeStatus">src/tao/constrained/impls/admm/admm.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/tutorials/tomographyADMM.c.html">src/tao/constrained/tutorials/tomographyADMM.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/tao/constrained/impls/admm/admm.c)


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