foundry/Data/systems/pf2e/templates/items/rules/flat-modifier.hbs

<div class="form-group">
    <label class="short">{{localize "PF2E.RuleEditor.General.Label"}}</label>
    <div class="spaced-fields details-container-flex-row">
        <input type="text" name="system.rules.{{index}}.label" value="{{rule.label}}" {{#unless rule.label}}placeholder="{{object.data.label}}"{{/unless}} />
        <label>
            {{localize "PF2E.RuleEditor.FlatModifier.HideIfDisabled"}}
            <input type="checkbox" name="system.rules.{{index}}.hideIfDisabled" {{checked rule.hideIfDisabled}}>
        </label>
    </div>
</div>

<div class="form-group">
    <label class="short">{{localize "PF2E.RuleEditor.General.Selector"}}</label>
    <div class="attached-input">
        <button type="button" class="attachment" data-action="toggle-selector">
            {{#if selectorIsArray}}Multiple{{else}}Single{{/if}}
        </button>
        {{#if selectorIsArray}}
            <input type="text" class="pf2e-tagify selector-list" name="system.rules.{{index}}.selector" value="{{json rule.selector}}" data-dtype="JSON"/>
        {{else}}
            <input type="text" name="system.rules.{{index}}.selector" value="{{rule.selector}}" />
        {{/if}}
    </div>
</div>

<div class="form-group">
    <label class="short">{{localize "PF2E.RuleEditor.General.Value"}}</label>
    <div class="spaced-fields details-container-flex-row">
        {{#if (eq rule.type "ability")}}
            <select name="system.rules.{{index}}.ability">
                {{#select rule.ability}}
                    {{#each abilities as |label key|}}
                        <option value="{{key}}">{{localize label}}</option>
                    {{/each}}
                {{/select}}
            </select>
        {{else if (eq value.mode "primitive")}}
            <div class="attached-input">
                <button type="button" class="attachment" data-action="toggle-brackets">
                    {{localize "PF2E.RuleEditor.General.Primitive"}}
                </button>
                <input type="text" name="system.rules.{{index}}.value" value="{{rule.value}}"/>
            </div>
        {{else if (eq value.mode "brackets")}}
            <div class="attached-input">
                <button type="button" class="attachment" data-action="toggle-brackets">
                    {{localize "PF2E.RuleEditor.General.Brackets"}}
                </button>
                <input type="text" name="system.rules.{{index}}.value.field" value="{{rule.value.field}}" placeholder="Actor Level (Default)"/>
            </div>
        {{/if}}

        <select name="system.rules.{{index}}.type" class="type-input">
            {{#select rule.type}}
                <option value="">untyped</option>
                {{#each types as |type|}}
                    <option value="{{type}}">{{type}}</option>
                {{/each}}
            {{/select}}
        </select>

        {{#if (eq value.mode "brackets")}}
            <a data-action="bracket-add"><i class="fas fa-fw fa-plus"></i></a>
        {{/if}}
    </div>
</div>

{{#if (eq value.mode "brackets")}}
    <div class="brackets">
        {{#each rule.value.brackets as |bracket idx|}}
            <div class="bracket details-container-flex-row spaced-fields">
                <label>{{localize "PF2E.RuleEditor.General.Range"}}</label>
                <div class="range">
                    <input type="number" name="system.rules.{{@root.index}}.value.brackets.{{idx}}.start" value="{{bracket.start}}">
                    -
                    <input type="number" name="system.rules.{{@root.index}}.value.brackets.{{idx}}.end" value="{{bracket.end}}">
                </div>
                <label>{{localize "PF2E.RuleEditor.General.Value"}}</label>
                <input type="text" name="system.rules.{{@root.index}}.value.brackets.{{idx}}.value" value="{{bracket.value}}"/>
                <a data-action="bracket-delete" data-idx="{{idx}}"><i class="fas fa-fw fa-trash"></i></a>
            </div>
        {{/each}}
    </div>
{{/if}}

{{#if isDamage}}
<div class="form-group">
    <label class="short">{{localize "PF2E.RuleEditor.General.DamageType"}}</label>
    <div class="spaced-fields details-container-flex-row">
        <input type="text" class="pf2e-tagify damage-type" name="system.rules.{{index}}.damageType" value="{{rule.damageType}}"/>
        <select name="system.rules.{{index}}.damageCategory">
            {{#select rule.damageCategory}}
                <option value=""></option>
                {{#each damageCategories as |label key|}}
                    <option value="{{key}}">{{localize label}}</option>
                {{/each}}
            {{/select}}
        </select>
        <select name="system.rules.{{index}}.critical">
            {{#select rule.critical}}
                <option value="">{{localize "PF2E.RuleEditor.General.CriticalBehavior.null"}}</option>
                <option value="false">{{localize "PF2E.RuleEditor.General.CriticalBehavior.false"}}</option>
                <option value="true">{{localize "PF2E.RuleEditor.General.CriticalBehavior.true"}}</option>
            {{/select}}
        </select>
    </div>
</div>
{{/if}}

<div class="form-group">
    <label class="short">{{localize "PF2E.RuleEditor.General.Predicate"}}</label>
    <input type="text" name="system.rules.{{index}}.predicate" value="{{json rule.predicate}}" />
</div>