Pass a null or empty value from Power Apps to a flow

YouTubeDropperButton.Run(varSplitText, (If(IsBlank(Notes.HtmlText), "", Notes.HtmlText)))

```flow
st=>start: 开始框
op=>operation: 处理框
cond=>condition: 判断框(是或否?)
sub1=>subroutine: 子流程
io=>inputoutput: 输入输出框
e=>end: 结束框
st->op->cond
cond(yes)->io->e
cond(no)->sub1(right)->op
```

```flow
st=>start: 开始框
op=>operation: 处理框
cond=>condition: 判断框(是或否?)
sub1=>subroutine: 子流程
io=>inputoutput: 输入输出框
e=>end: 结束框
st(right)->op(right)->cond
cond(yes)->io(bottom)->e
cond(no)->sub1(right)->op
```

  override func viewDidLoad() {
        super.viewDidLoad()
    
           let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
            let width = UIScreen.main.bounds.width
            layout.sectionInset = UIEdgeInsets(top: 0, left: 20, bottom: 0, right: 20)
            layout.itemSize = CGSize(width: width / 2 - 20, height: width / 2)
            layout.minimumInteritemSpacing = 0
            layout.minimumLineSpacing = 0
            popularServicesCollectionView!.collectionViewLayout = layout
  }

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata" fqn="lightningSharingWrapper">
    <apiVersion>46.0</apiVersion>
    <isExposed>true</isExposed>
    <masterLabel>SubmitterWrapperLWC</masterLabel>
    <description>This is a demo component.</description>

    <targets>
        <target>lightning__FlowScreen</target>  
        <target>lightning__RecordPage</target> 
    </targets>

    <targetConfigs>
        <targetConfig targets="lightning__FlowScreen" category="some random category">
            <property name="ruleName" type="String" role="inputOnly" />
            <property name="recordId" type="String" role="inputOnly" />
        </targetConfig>
        <targetConfig targets="lightning__RecordPage">     
            <objects>
                <object>Account</object> 
            </objects>
        </targetConfig>
    </targetConfigs>

</LightningComponentBundle>

import math
import numpy as np
import pandas as pd

def nully(obj: any) -> bool:
    """Checks for all kinds of NaN, NaT and None
    Args:
        obj[any]: Object to check
    Returns:
        bool: True if obj is nully
    """
    conditions: List[bool] = [
      obj is None, # python None
      obj is np.nan, # numpy NaN
      obj is pd.nan, # pandas NA,
      obj is pd.NaT # pandas NaT
    ]
    try:
        conditions.append(math.isnan(obj)) # python NaN
    except TypeError: # not a number type
        pass
    if any(conditions):
        return True
    return False

"https://[tenantName].sharepoint.com/_layouts/15/UserPhoto.aspx?Size=L&AccountName=" & ThisItem.Employee.Email

If(
    (IsEmpty(ComboBox42.SelectedItems) || IsBlank(ComboBox42.Selected.Value)) && IsBlank(ComboBox42.SearchText),
    SubmitForm(EditForm1),
    Notify(
        "Please fill in the Combo Box!",
        Error
    )
)

Office365Users.UserPhotoV2(ThisItem.PeopleColumn.Email)

Set(currentUser, User()); //require for the on start property

Set(varFirstName, Trim(Last(FirstN(Split(currentUser.FullName," "), 1)).Result))

Concat(selectedDesks, " " & Title & Char(44))

If(Value(DataCardValue14_1.Text)/Value(RoundDown(Value(DataCardValue14_1.Text),0))<>1, Notify("No decimal,please try again!",NotificationType.Error);Reset(DataCardValue14_1))

<img src="data:image/jpeg;base64,@{outputs('Get_file_content_using_path')?['body'].$content}" alt="My Image" />
  
  <"data:image/jpeg;base64," alt="My Image" />
    
   outputs('Get_file_content_using_path')?['body'].$content

Concat(AddToWatchList.SelectedItems.Value,Value)

ForAll(Tags.SelectedItems, Collect(colTags, {Value: ThisRecord.Value}))