# PetscWeakFormRewriteKeys
Change any key on the given label to use the new set of label values 
## Synopsis
```
#include "petscds.h" 
PetscErrorCode PetscWeakFormRewriteKeys(PetscWeakForm wf, DMLabel label, PetscInt Nv, const PetscInt values[])
```
Not Collective


## Input Parameters

- ***wf     -*** The original `PetscWeakForm`
- ***label  -*** The label to change keys for
- ***Nv     -*** The number of new label values
- ***values -*** The set of new values to relabel keys with





## Note
This is used internally when boundary label values are specified from the command line.


## See Also
 `PetscWeakForm`, `DMLabel`, `PetscWeakFormReplaceLabel()`, `PetscWeakFormCreate()`, `PetscWeakFormDestroy()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/dt/interface/dtweakform.c.html#PetscWeakFormRewriteKeys">src/dm/dt/interface/dtweakform.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/dt/interface/dtweakform.c)


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