# PetscWeakFormReplaceLabel
Change any key on a label of the same name to use the new label 
## Synopsis
```
#include "petscds.h" 
PetscErrorCode PetscWeakFormReplaceLabel(PetscWeakForm wf, DMLabel label)
```
Not Collective


## Input Parameters

- ***wf    -*** The original `PetscWeakForm`
- ***label -*** The label to change keys for





## Note
This is used internally when meshes are modified


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

## Level
intermediate

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